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Boost Your Immune System And Ward Off Viruses With These Foods

Chicken soup helps, sure, but a diet rich in vegetables, fish and even garlic can help lessen the severity of a cold or prevent you from getting sick.

The combination of chicken, homemade broth, veggies (such as carrots, celery and onions) and noodles or rice in chicken soup is immune-boosting and soothing, and the warm broth clears your nasal passages and keeps you hydrated.

Winter doesn’t just bring the blues, it also gifts us with coughs, runny noses and sore throats. It’s not because of the old adage of bundling up or “you’ll catch a cold!” We tend to get more cold and flu viruses during the winter as germs survive longer indoors due to poor ventilation and lack of humidity, and we are stuck indoors for much longer during the frigid months.

There’s a key to rev up our immune system that can make a huge difference: you are what you eat. A healthy diet often prevents colds and flus or reduces their longevity. The antioxidants including vitamins C, A and E found in fruits and vegetables protect our cells and boost our immune system. Supplements can never replace the real thing.

A healthy diet year-round is crucial to keeping well. This means cutting down on inflammatory foods including white flour, white rice, sugar and saturated fats, as inflammation reduces your immune system. Stick to a balanced diet with lots of vegetables, fruits, herbs, spices, whole grains, healthy fats and lean protein.

Garlic

Allicin, a natural chemical in garlic, fights common viruses. Add it to your cooked foods and salads. Don’t forget to have breath mints on hand!

Broccoli

Raw or lightly steamed broccoli contains vitamins A and C, as well as the compound sulforaphane, which helps ward off viruses. Add it to salads or use for dipping.

Vitamin C

For decades this has been the most popular vitamin for fending off viruses, but a handful of supplements won’t do much once you’re already infected. The best defence is to include a variety of fruits and vegetables daily with vitamin C to keep your immune system strong.

Oranges aren’t your only option — you can get more vitamin C from strawberries, kiwis, pineapple, mango, papaya, bell peppers, broccoli, cabbage, snow peas, brussels sprouts, cauliflower and kale.

Probiotics

Probiotics are beneficial bacteria that are good for the gut. We generally think of this as meaning digestion, but our gut health is actually a key component to many elements of our health, including 70 per cent of our immune system. Studies show that specific foods containing probiotics reduce the occurrence, length and severity of colds. These foods include sauerkraut, kefir, yogourts with live and active cultures, kimchi, kombucha and miso.

Chicken soup

There’s nothing like a warm bowl of chicken noodle soup when you’re under the weather, but does it actually help to fight off a cold? The combination of chicken, homemade broth, veggies (such as carrots, celery and onions) and noodles or rice is immune-boosting and soothing. The warm broth clears your nasal passages and keeps you hydrated. Mother was right!

Tea

We drink mug after mug of tea when we’re ill as it feels great on a sore throat, but it’s actually doing more to help, depending on the type. Black and green teas contain an amino acid called L-Theanine, which boosts our immune system. Black tea has more of this amino acid than green, but green tea protects the immune system against disease-causing free radicals. Drink up!

Spinach

Spinach is rich in vitamin C and contains several antioxidants, which increases the ability for our immune system to fight infections. Eat it raw or cook it as little as possible to get the most nutrients.

Shellfish and fish

Indulging in fish or shellfish twice weekly may prevent colds and flus. Selenium, a mineral found in oysters, lobsters, crabs and clams, helps white blood cells produce proteins that fight flu viruses. Salmon, tuna, mackerel, and herring are loaded with omega-3 fats, which reduce inflammation.

Before you end up sidelined on the couch this winter, include a combination of these immune-boosting foods so you can have a healthy 2018.

By ROSE REISMAN    Special to the Star    Thu., Jan. 11, 2018
Rose Reisman is a nutritionist, caterer, speaker, media personality and author of 19 cookbooks. info@rosereisman.com
 


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This Food May Help You Sleep Better

Forget warm milk. A new study from the University of Pennsylvania says that fish may be the key to a good night’s sleep.

The paper, published Thursday in Scientific Reports, found an association between regular fish consumption and high sleep quality among Chinese schoolchildren, likely thanks to the omega-3 fatty acids found in fish. Largely as a result of that improved sleep, the researchers found, the children also scored higher on IQ tests.

“There’s a relationship between fish consumption and higher cognitive functioning. What what we document here is that it’s the better sleep that explains the relationship,” says Adrian Raine, one of the paper’s authors and a professor of criminology, psychiatry and psychology at Penn. “From A to B to C: From fish consumption to better sleep to higher cognitive functioning.”

The researchers asked 541 schoolchildren in China between ages 9 and 11 to describe their eating habits, including how often they ate fish. Their parents, meanwhile, were asked to answer questions about the kids’ sleep patterns. Researchers then administered IQ tests when the children turned 12.

They found links between eating fish regularly — the more, the better — and both improved sleep and higher IQ scores. But, Raine explains, it appears that many of the cognitive benefits can be traced back to bedtime. “The brain is so much more plastic early on in child development,” he says. “We might anticipate that fish consumption earlier in life may be particularly beneficial for a child’s sleep and cognitive functioning.”

While the study focused on kids, Raine says “it’s quite reasonable to imagine that these findings can also apply to adults,” citing studies that have shown that omega-3 fatty acids can alter psychological functioning in adults.

Eating fish just a few times a month may improve your brain functioning, Raine says. (Fish and omega-3s have also been shown to be good for your heart.)

“The important thing is really having a balanced diet. It needn’t be a lot,” Raine says. “Even if parents could just get fish on the table once a week, that could be enough to make a bit of a difference over at school and in long-term performance, and especially sleep.”

By JAMIE DUCHARME       December 22, 2017      TIME Health
source: time.com


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Selenium: What It Does and Where To Find It

Selenium Protects a Specific Type of Interneurons in The Brain

Exactly 200 years ago, the Swedish scientist Jöns Jacob Berzelius discovered the trace element selenium, which he named after the goddess of the moon, Selene. Besides its industrial applications (chemical industry, production of semiconductors and toners), selenium is an essential trace element and indispensable for humans, many animals and some bacteria. A team led by Dr. Marcus Conrad, research group leader at the Institute of Developmental Genetics (IDG) at Helmholtz Zentrum München, showed for the first time why selenium is a limiting factor for mammals.

Scientific ‘by-catch’ solves decades-old mystery

The scientists have been investigating for years the processes of a novel type of cell death, known as ferroptosis. In this context, the enzyme GPX4, which normally contains selenium in the form of the amino acid selenocysteine, plays an important role.

In order to better understand the role of GPX4 in this death process, we established and studied mouse models in which the enzyme was modified,” said study leader Conrad. “In one of these models, we observed that mice with a replacement of selenium to sulfur in GPX4 did not survive for longer than three weeks due to neurological complications.”

In their search for the underlying reasons, the researchers identified a distinct subpopulation of specialized neurons in the brain, which were absent when selenium-containing GPX4 was lacking. “In further studies, we were able to show that these neurons were lost during postnatal development, when sulfur- instead of selenium-containing GPX4 was present,” stated first author of the study, Irina Ingold.

Furthermore, the scientists were able to show that ferroptosis is triggered by oxidative stress, which is known to occur for instance during high metabolic activity of cells and high neuronal activity. “Our study demonstrates for the first time that selenium is an essential factor for the postnatal development of a specific type of interneurons,” said Dr. José Pedro Friedmann Angeli, a scientist at the IDG, describing the results. “Selenium-containing GPX4 protects these specialized neurons from oxidative stress and from ferroptotic cell death.”

Thus, the study explains why certain selenoenzymes are essential in some organisms, including mammals, whereas they are dispensable in other organisms, such as fungi and higher plants. In future investigations, study leader Marcus Conrad and his team aim to investigate how ferroptosis is triggered in cells. As a long-term goal, he wants to elucidate the role of ferroptosis in various disease conditions in order to be able to alleviate diseases, such as cancer or neurodegeneration, which are currently difficult to tackle.

Journal Reference:

Irina Ingold, Carsten Berndt, Sabine Schmitt, Sebastian Doll, Gereon Poschmann, Katalin Buday, Antonella Roveri, Xiaoxiao Peng, Florencio Porto Freitas, Tobias Seibt, Lisa Mehr, Michaela Aichler, Axel Walch, Daniel Lamp, Martin Jastroch, Sayuri Miyamoto, Wolfgang Wurst, Fulvio Ursini, Elias S.J. Arnér, Noelia Fradejas-Villar, Ulrich Schweizer, Hans Zischka, José Pedro Friedmann Angeli, Marcus Conrad. Selenium Utilization by GPX4 Is Required to Prevent Hydroperoxide-Induced Ferroptosis. Cell, 2017; DOI: 10.1016/j.cell.2017.11.048

Story Source:
Materials provided by Helmholtz Zentrum München – German Research Center for Environmental Health.
Note: Content may be edited for style and length.
December 29, 2017
www.sciencedaily.com

10 Foods Rich in Selenium

Selenium Function

This important nutrient is vital to immune system function. Selenium works in conjunction with vitamin E, vitamin C, glutathione and vitamin B3 as an antioxidant to prevent free radical damage in the body. It’s thought to help prevent cancer by affecting oxidative stress, inflammation and DNA repair. Selenium has been found to be important to male fertility; increasing selenium levels leads to improved sperm motility. There is preliminary research that suggests that selenium supplementation may also help with asthma symptoms, but more studies are needed.

Selenium Deficiencies

Deficiencies of selenium can occur in areas where soil content of this mineral is low. Diets high in refined foods may also lead to deficiency, as selenium can be destroyed by food processing. Taking anti-inflammatory drugs may reduce the body’s supply of selenium.

Low selenium levels can contribute to autoimmune problems, such as psoriasis and thyroid disease. Low levels have also been tied to stomach, throat and prostate cancers, although more research is needed to determine if this is a cause or a result of the disease. Some studies suggest that selenium deficiency is linked to mood disorders. There’s indication that deficiencies in selenium may contribute to the progression of viral infections.

10 Selenium Food Sources

The selenium content in foods depends on the concentration of selenium in the soil where the crops were grown. The following foods are generally considered good sources of selenium:

  • Brazil Nuts
  • Sunflower Seeds
  • Fish (tuna, halibut, sardines, flounder, salmon)
  • Shellfish (oysters, mussels, shrimp, clams, scallops)
  • Meat (Beef, liver, lamb, pork)
  • Poultry (chicken, turkey)
  • Eggs
  • Mushrooms (button, crimini, shiitake)
  • Grains (wheat germ, barley, brown rice, oats)
  • Onions

Recommended Daily Allowance

  • Children (under 3): 20 mcg
  • Children (4-8): 30 mcg
  • Children (9-13): 40 mcg
  • Adolescents (14-18): 55 mcg
  • Adults 19 and older: 55 mcg
  • Pregnant women: 60 mcg
  • Lactating women: 70 mcg

Toxicity

Exceeding 400 mcg per day can lead to selenium toxicity. Side effects may include hair loss, white spots on fingernails, fatigue, dizziness, nausea and nerve damage. There’s some evidence that high selenium levels may increase the risk of squamous cell skin cancer. Another well controlled study found a correlation between higher levels of selenium and an increased risk of developing type-2 diabetes.

Because of the possibility of toxicity, selenium supplements are controversial. The safest way to ensure a sufficient level of selenium in the diet is by eating a variety of selenium rich foods, like those listed above. Brazil nuts can be very high in selenium and should only be eaten occasionally. One Brazil nut can supply a whole day’s requirement of selenium, although this can vary depending on soil conditions. A multivitamin that contains some selenium is safe for most people to take and can help to fill the gap in a diet that is lacking.

source: www.fitday.com


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This Nutrient Balance Reverses Brain Aging

The right balance between omega-3 and omega-6 fatty acids may help promote healthy cognitive aging, new research finds.

While we are used to hearing about the benefits of the fatty acids in fish and fish oils, that is only half the story.

Omega-6 fatty acids can come from nuts, seeds and other oils.

Typically, Western diets have too much omega-6 and not enough omega-3.

Together, a balance of these fatty acids may help to reduce age-related decline and maintain the integrity of cortical structures.

Ms Marta Zamroziewicz, who led the research, said:

“We studied a primary network of the brain — the frontoparietal network — that plays an important role in fluid intelligence and also declines early, even in healthy aging.
In a separate study, we examined the white matter structure of the fornix, a group of nerve fibers at the center of the brain that is important for memory.”

The researchers examined the levels of polyunsaturated fatty acids in adults aged 65 to 75, along with their brain structure.

The best balance of fatty acids for brain health.

Ms Zamroziewicz explained that it takes more than just fish and fish oils to keep the brain healthy with age:

“A lot of research tells us that people need to be eating fish and fish oil to get neuroprotective effects from these particular fats, but this new finding suggests that even the fats that we get from nuts, seeds and oils can also make a difference in the brain.”

A second study found a link between a balanced amount of omega-3 and omega-6 fatty acids and greater memory preservation in older adults.

Ms Zamroziewicz explained:

“These findings have important implications for the Western diet, which tends to be misbalanced with high amounts of omega-6 fatty acids and low amounts of omega-3 fatty acids.”

Professor Aron Barbey, who co-authored the study, said:

“These two studies highlight the importance of investigating the effects of groups of nutrients together, rather than focusing on one at a time.
They suggest that different patterns of polyunsaturated fats promote specific aspects of cognition by strengthening the underlying neural circuits that are vulnerable to disease and age-related decline.”

The study was published in the journal Nutritional Neuroscience (Zamroziewicz et al., 2017).

source: PsyBlog


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Five Foods That May Increase Your IQ

A healthy diet as you’re growing up may help you have a higher IQ, while a diet high in processed foods, fat and sugar may result in a lower IQ, according to a study published in the Journal of Epidemiology & Community Health in February 2011. Many of the same foods typically recommended for a healthy diet may also be good for your IQ.

Fish and Omega-3 Sources

Omega-3 fats, found in many types of fish and seafood, walnuts and flaxseeds, are important for infant brain development. An article published on the Association for Psychological Science website notes that children given omega-3 fats have higher IQs than those who don’t consume much of these essential polyunsaturated fats. These healthy fats may also help protect against dementia as you get older. Oysters are also a good seafood choice, because they’re rich in zinc. Zinc deficiency may adversely affect brain development, according to a review article published in Frontiers in Human Neuroscience in 2013.

Children and pregnant women are particularly sensitive to contaminants in fish, so choose those that are high in omega-3 fats but low in contaminants, such as wild salmon, sardines, Atlantic mackerel, mussels and rainbow trout for the recommended two servings per week of seafood to maximize benefits while minimizing risks.

Fruits and Vegetables

Antioxidant-rich fruits and vegetables, such as leafy greens and orange and red fruits and vegetables, may help protect your brain function and your memory as you age because of the beta-carotene and vitamin C they contain.

A diet rich in herbs, legumes, raw fruits and vegetables and cheese resulted in a higher IQ in children than a diet that included higher amounts of sweet and salty snacks, according to a study published in the European Journal of Epidemiology in July 2012.

Another study, published in the Journal of Child Psychology and Psychiatry in 2009, came to a similar conclusion, showing that children who ate higher amounts of fruits, vegetables and home-prepared foods had higher IQs.

Iron-Rich Foods

Iron-deficiency anemia may impair your attention span, IQ and ability to concentrate, so eat plenty of iron-rich foods. Increasing iron intake only appears to help IQ when children are deficient in iron, however, according to the Frontiers in Human Neuroscience article. Iron-rich foods include lean meats, oysters, beans, tofu, spinach, sardines and fortified breakfast cereals.

Other Protein-Rich Foods

Diets higher in protein and lower in fat may help improve your concentration because of the dopamine your body releases with protein consumption. Soy protein may be particularly helpful, since it also contains lecithin, which may improve memory and brain function. Lowfat dairy products, lean meats and poultry, eggs, nuts, seeds and legumes are all nutritious sources of protein.

Get Plenty of B Vitamins and Choline

Foods containing folate, vitamin B-12 and choline may also help keep your brain healthy, limiting your risk for dementia, depression and neurological disorders. They are also important for cognitive development, so if children don’t get enough of these vitamins they may have a lower IQ. Folate is available in fortified breakfast cereals, spinach, beef liver, rice, asparagus, black-eyed peas, Brussels sprouts and avocado, and most animal-based foods contain vitamin B-12. Good sources of choline include beef, eggs, scallops, salmon, chicken breast, cod, shrimp, Brussels sprouts and broccoli.

by JESSICA BRUSO       Jun 17, 2015


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Fun Fact Friday

  • More than one-third of married couples in Canada sleep in separate bedrooms. 
  • Having a low opinion of yourself is not modesty. It’s self-destruction. 
  • People who eat fish at least once a week have thicker, stronger and more resilient brains.
  • 71% of breakups happen because of mood swings.
  • Every year, about 86,000 people are injured by tripping over their pets. 

 

ingredient_label
Ranch dressing (and many other foods) contain titanium dioxide to keep it white
– Titanium dioxide is also used in most sunscreens and might be a carcinogen.
  • When soft music is playing in the background, people are able to focus better.
  • Kissing can increase your lifespan.
  • Studies have proven that driving in city traffic is just as stressful as participating in extreme sports like skydiving.
  • Ranch dressing contains titanium dioxide to keep it white – Titanium dioxide is also used in most sunscreens and might be a carcinogen.
Happy Friday!

 source: https://twitter.com/faccccct


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Natural Ways to Boost Testosterone

Add Zing to Your Meals

Onions and garlic are your allies in the kitchen and in the bedroom. They help you make more and better sperm. Both raise levels of a hormone that triggers your body to make testosterone. And both have high levels of natural plant chemical called flavonoids, which safeguard your li’l swimmers against damage.

Pile on the Protein

Lean beef, chicken, fish, and eggs are some of your options. Tofu, nuts, and seeds have protein, too. Try to get about 5 to 6 ounces per day, although the ideal amount for you depends on your age, sex, and how active you are. When you don’t eat enough of these foods, your body makes more of a substance that binds with testosterone, leaving you with less T available to do its job.

Go Fish

Fatty kinds like salmon, tuna, and mackerel are rich with vitamin D. It’s a natural testosterone booster because it plays a crucial role in hormone production.

More Magnesium

This mineral blocks a protein from binding with testosterone. The result? More of the usable man-stuff floating around in your blood. Spinach is packed with magnesium. Almonds, cashews, and peanuts are good sources, too.

Order Oysters

There’s a reason why these mollusks are known for being great for fertility. They have almost five times your recommended daily dose of zinc. This mineral helps your body make testosterone. You can also get it in beef and beans. And it’s often added to breakfast cereal.

Bonus: Zinc boosts your immune system.

pomegranate-juice

 

Pick Pomegranate

Start your day with a glass of this ancient seedy fruit’s juice instead of OJ. It lowers levels of stress hormones, such as cortisol, which helps raise levels of sex hormones including testosterone. And it can lower your blood pressure and put you in a better mood!

Diet Down

A Mediterranean-style diet can help keep your weight in check and protect you from insulin resistance, which is related to lower T levels. And when your testosterone is low, your fat levels go up, which can lead to your body not using insulin well. You can break this cycle.

Trade saturated fats for healthier ones such as olive oil, avocado, and nuts. Choose lean meats and whole grains. Eat lots of veggies and fruits.

Back Off the Beer

It takes only 5 days of regular drinking for your testosterone level to drop. Alcohol may throw off many parts of your body’s hormone system. Heavy drinkers can have shrunken testes, thin chest and beard hair, and higher levels of the female hormone estrogen.

Use Glass, Not Plastic

Be careful about what you store your leftovers in. Bisphenol-A (BPA) is a chemical found in some plastics, cans, and other food packaging. It can mess with your hormone-making process. After 6 months, men who worked around BPA every day had lower testosterone levels than men who didn’t.

Build Your Strength

Focus your workouts on your muscles. Hit the weight room at the gym, or get a trainer to help you with a routine on the exercise machines. Cardio has its benefits, but it doesn’t boost your testosterone like strength training can.

Be careful to not overdo it. Too much exercise can take your T level in the other direction.

Get Enough ZZZs

Your body turns up the testosterone when you fall asleep. The levels peak when you start dreaming and stay there until you wake up. But daytime testosterone levels can drop up to 15% when you get only 5 hours of sleep. Aim for 7 or 8 hours every night, even if it means a shift in your schedule or a limit to your late-night plans.

source: www.webmd.com


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Selenium: What It Does and Where To Find It

Selenium Protects a Specific Type of Interneurons in The Brain

Exactly 200 years ago, the Swedish scientist Jöns Jacob Berzelius discovered the trace element selenium, which he named after the goddess of the moon, Selene. Besides its industrial applications (chemical industry, production of semiconductors and toners), selenium is an essential trace element and indispensable for humans, many animals and some bacteria. A team led by Dr. Marcus Conrad, research group leader at the Institute of Developmental Genetics (IDG) at Helmholtz Zentrum München, showed for the first time why selenium is a limiting factor for mammals.

Scientific ‘by-catch’ solves decades-old mystery

The scientists have been investigating for years the processes of a novel type of cell death, known as ferroptosis. In this context, the enzyme GPX4, which normally contains selenium in the form of the amino acid selenocysteine, plays an important role.

In order to better understand the role of GPX4 in this death process, we established and studied mouse models in which the enzyme was modified,” said study leader Conrad. “In one of these models, we observed that mice with a replacement of selenium to sulfur in GPX4 did not survive for longer than three weeks due to neurological complications.”

In their search for the underlying reasons, the researchers identified a distinct subpopulation of specialized neurons in the brain, which were absent when selenium-containing GPX4 was lacking. “In further studies, we were able to show that these neurons were lost during postnatal development, when sulfur- instead of selenium-containing GPX4 was present,” stated first author of the study, Irina Ingold.

Furthermore, the scientists were able to show that ferroptosis is triggered by oxidative stress, which is known to occur for instance during high metabolic activity of cells and high neuronal activity. “Our study demonstrates for the first time that selenium is an essential factor for the postnatal development of a specific type of interneurons,” said Dr. José Pedro Friedmann Angeli, a scientist at the IDG, describing the results. “Selenium-containing GPX4 protects these specialized neurons from oxidative stress and from ferroptotic cell death.”

Thus, the study explains why certain selenoenzymes are essential in some organisms, including mammals, whereas they are dispensable in other organisms, such as fungi and higher plants. In future investigations, study leader Marcus Conrad and his team aim to investigate how ferroptosis is triggered in cells. As a long-term goal, he wants to elucidate the role of ferroptosis in various disease conditions in order to be able to alleviate diseases, such as cancer or neurodegeneration, which are currently difficult to tackle.

Journal Reference:

Irina Ingold, Carsten Berndt, Sabine Schmitt, Sebastian Doll, Gereon Poschmann, Katalin Buday, Antonella Roveri, Xiaoxiao Peng, Florencio Porto Freitas, Tobias Seibt, Lisa Mehr, Michaela Aichler, Axel Walch, Daniel Lamp, Martin Jastroch, Sayuri Miyamoto, Wolfgang Wurst, Fulvio Ursini, Elias S.J. Arnér, Noelia Fradejas-Villar, Ulrich Schweizer, Hans Zischka, José Pedro Friedmann Angeli, Marcus Conrad. Selenium Utilization by GPX4 Is Required to Prevent Hydroperoxide-Induced Ferroptosis. Cell, 2017; DOI: 10.1016/j.cell.2017.11.048

Story Source:
Materials provided by Helmholtz Zentrum München – German Research Center for Environmental Health. 
Note: Content may be edited for style and length.
 
December 29, 2017

10 Foods Rich in Selenium

Selenium Function

This important nutrient is vital to immune system function. Selenium works in conjunction with vitamin E, vitamin C, glutathione and vitamin B3 as an antioxidant to prevent free radical damage in the body. It’s thought to help prevent cancer by affecting oxidative stress, inflammation and DNA repair. Selenium has been found to be important to male fertility; increasing selenium levels leads to improved sperm motility. There is preliminary research that suggests that selenium supplementation may also help with asthma symptoms, but more studies are needed.

Selenium Deficiencies

Deficiencies of selenium can occur in areas where soil content of this mineral is low. Diets high in refined foods may also lead to deficiency, as selenium can be destroyed by food processing. Taking anti-inflammatory drugs may reduce the body’s supply of selenium.

Low selenium levels can contribute to autoimmune problems, such as psoriasis and thyroid disease. Low levels have also been tied to stomach, throat and prostate cancers, although more research is needed to determine if this is a cause or a result of the disease. Some studies suggest that selenium deficiency is linked to mood disorders. There’s indication that deficiencies in selenium may contribute to the progression of viral infections.

10 Selenium Food Sources

The selenium content in foods depends on the concentration of selenium in the soil where the crops were grown. The following foods are generally considered good sources of selenium:

  • Brazil Nuts
  • Sunflower Seeds
  • Fish (tuna, halibut, sardines, flounder, salmon)
  • Shellfish (oysters, mussels, shrimp, clams, scallops)
  • Meat (Beef, liver, lamb, pork)
  • Poultry (chicken, turkey)
  • Eggs
  • Mushrooms (button, crimini, shiitake)
  • Grains (wheat germ, barley, brown rice, oats)
  • Onions

 

Recommended Daily Allowance

  • Children (under 3): 20 mcg
  • Children (4-8): 30 mcg
  • Children (9-13): 40 mcg
  • Adolescents (14-18): 55 mcg
  • Adults 19 and older: 55 mcg
  • Pregnant women: 60 mcg
  • Lactating women: 70 mcg

 

Toxicity

Exceeding 400 mcg per day can lead to selenium toxicity. Side effects may include hair loss, white spots on fingernails, fatigue, dizziness, nausea and nerve damage. There’s some evidence that high selenium levels may increase the risk of squamous cell skin cancer. Another well controlled study found a correlation between higher levels of selenium and an increased risk of developing type-2 diabetes.

Because of the possibility of toxicity, selenium supplements are controversial. The safest way to ensure a sufficient level of selenium in the diet is by eating a variety of selenium rich foods, like those listed above. Brazil nuts can be very high in selenium and should only be eaten occasionally. One Brazil nut can supply a whole day’s requirement of selenium, although this can vary depending on soil conditions. A multivitamin that contains some selenium is safe for most people to take and can help to fill the gap in a diet that is lacking.


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Nutritional Strategies to Ease Anxiety

According the National Institute of Mental Health, anxiety disorders are the most common mental illness in the United States. That’s 40 million adults—18% of the population—who struggle with anxiety. Anxiety and depression often go hand in hand, with about half of those with depression also experiencing anxiety.

Specific therapies and medications can help relieve the burden of anxiety, yet only about a third of people suffering from this condition seek treatment. In my practice, part of what I discuss when explaining treatment options is the important role of diet in helping to manage anxiety.

In addition to healthy guidelines such as eating a balanced diet, drinking enough water to stay hydrated, and limiting or avoiding alcohol and caffeine, there are many other dietary considerations that can help relieve anxiety. For example, complex carbohydrates are metabolized more slowly and therefore help maintain a more even blood sugar level, which creates a calmer feeling.

A diet rich in whole grains, vegetables, and fruits is a healthier option than eating a lot of simple carbohydrates found in processed foods. When you eat is also important. Don’t skip meals. Doing so may result in drops in blood sugar that cause you to feel jittery, which may worsen underlying anxiety.

The gut-brain axis is also very important, since a large percentage (about 95%) of serotonin receptors are found in the lining of the gut. Research is examining the potential of probiotics for treating both anxiety and depression.

Foods that can help quell anxiety

You might be surprised to learn that specific foods have been shown to reduce anxiety.

  • In mice, diets low in magnesium were found to increase anxiety-related behaviors. Foods naturally rich in magnesium may therefore help a person to feel calmer. Examples include leafy greens such as spinach and Swiss chard. Other sources include legumes, nuts, seeds, and whole grains.
  • Foods rich in zinc such as oysters, cashews, liver, beef, and egg yolks have been linked to lowered anxiety.
  • Other foods, including fatty fish like wild Alaskan salmon, contain omega-3 fatty acid. A study completed on medical students in 2011 was one of the first to show that omega-3s may help reduce anxiety. (This study used supplements containing omega-3 fatty acids). Prior to the study, omega-3 fatty acids had been linked to improving depression only.
  • A recent study in the journal Psychiatry Research suggested a link between probiotic foods and a lowering of social anxiety. Eating probiotic-rich foods such as pickles, sauerkraut, and kefir was linked with fewer symptoms.
  • Asparagus, known widely to be a healthy vegetable. Based on research, the Chinese government approved the use of an asparagus extract as a natural functional food and beverage ingredient due to its anti-anxiety properties.
  • Foods rich in B vitamins such as avocado and almonds

These “feel good” foods spur the release of neurotransmitters such as serotonin and dopamine. They are a safe and easy first step in managing anxiety.

Walnuts

Are antioxidants anti-anxiety?

Anxiety is thought to be correlated with a lowered total antioxidant state. It stands to reason, therefore, that enhancing your diet with foods rich in antioxidants may help ease the symptoms of anxiety disorders. A 2010 study reviewed the antioxidant content of 3,100 foods, spices, herbs, beverages, and supplements. Foods designated as high in antioxidants by the USDA include:

  • Beans: Dried small red, Pinto, black, red kidney
  • Fruits: Apples (Gala, Granny Smith, Red Delicious), prunes, sweet cherries, plums, black plums
  • Berries: Blackberries, strawberries, cranberries, raspberries, blueberries
  • Nuts: Walnuts, pecans
  • Vegetables: Artichokes, kale, spinach, beets, broccoli
  • Spices with both antioxidant and anti-anxiety properties include turmeric (containing the active ingredient curcumin) and ginger.

Achieving better mental health through diet

Be sure to talk to your doctor if your anxiety symptoms are severe or last more than two weeks. But even if your doctor recommends medication or therapy for anxiety, it is still worth asking whether you might also have some success by adjusting your diet. While nutritional psychiatry is not a substitute for other treatments, the relationship between food, mood, and anxiety is garnering more and more attention. There is a growing body of evidence, and more research is needed to fully understand the role of nutritional psychiatry, or as I prefer to call it, Psycho-Nutrition.

Uma Naidoo, MD, Contributor       APRIL 13, 2016, 9:30 AM


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12 Foods You Can Eat a Lot of Without Getting Fat

One piece of advice often given to dieters is to eat until you reach satiety — that is, until you feel full.

The problem is that different foods can have vastly different effects on hunger and satiety.

For example, 200 calories of chicken breast may make you feel full, but it could take 500 calories of cake to have the same effect.

Thus, weight loss isn’t just about eating until you feel full. It’s about choosing the right foods that make you feel full for the least amount of calories.

What Makes a Food Filling?

Many factors determine a food’s satiety value, or how filling it is relative to its calorie content. The calorie/satiety ratio is measured on a scale called the satiety index.

The satiety index also measures a food’s ability to make you feel full, reduce your hunger and lower your calorie intake over the course of the day.

Some foods simply do a better job at satisfying hunger and preventing overeating than others.

Filling foods tend to have the following qualities:

  • High volume: Studies indicate that the volume of food consumed strongly influences satiety. When foods contain a lot of water or air, the volume is increased without adding calories.
  • High protein: Studies show protein is more filling than carbs and fat. Diets higher in protein increase satiety and lead to lower overall calorie intake than lower-protein diets do.
  • High fiber: Fiber provides bulk and helps you feel full. It also slows the movement of food through your digestive tract, which keeps you feeling fuller for longer.
  • Low energy density: This means that a food is low in calories for its weight. Foods with low energy density can help you feel full for fewer calories .

So if you eat foods with the above characteristics, then you can usually eat them until fullness without getting in too many calories.

Here are 12 filling foods you can eat a lot of without getting fat.

1. Boiled Potatoes

Due to their higher carb content, many people avoid potatoes when trying to lose weight, but they shouldn’t.

Whole potatoes are loaded with vitamins, fiber and other important nutrients. They also contain a certain type of starch called resistant starch.

Resistant starch contains half the calories of regular starch (2 instead of 4 calories per gram). In your digestive system, it acts a lot like soluble fiber, helping you feel full.

Because adding resistant starch to meals helps satisfy hunger, it causes people to eat fewer calories.

Interestingly, cooling potatoes after they’re cooked increases their resistant starch content. In fact, studies show that cooling and reheating potatoes multiple times continues to increase their hunger-suppressing effect.

In a study that measured the ability of 38 foods to satisfy hunger, boiled potatoes ranked the highest.

While boiled potatoes were the most satisfying food tested, fried potato chips were found to be three times less filling.

Bottom Line: Boiled potatoes, which are highly nutritious, are number one on the satiety index. Fried potato chips are three times less filling and not considered weight loss friendly.

2. Whole Eggs

Eggs are another food that has been unfairly demonized in the past. The truth is, eggs are incredibly healthy and high in several important nutrients.

Most of the nutrients, including about half of an egg’s protein, are found in the yolk.

Eggs are a complete protein, meaning they contain all nine essential amino acids.

In addition, they’re very filling.

Several studies found that people who ate eggs for breakfast were more satisfied and consumed fewer calories throughout the day than those who had a bagel for breakfast.

In particular, one study found that people who ate eggs for breakfast lowered their body mass index (BMI) and lost more weight than those who ate a bagel.

Bottom Line: Eggs are a great source of nutrients, including high-quality protein. They may help you eat less for up to 36 hours after a meal.

3. Oatmeal

Oatmeal is a type of porridge, or hot cereal, that is often consumed for breakfast.

It’s incredibly filling and ranks third on the satiety index.

This is mainly due to its high fiber content and ability to soak up water.

Oats are a good source of a soluble fiber called beta-glucan, which helps slow down digestion and the absorption of carbs.

When compared to ready-to-eat breakfast cereal, oatmeal was better at suppressing appetite, increasing satiety and reducing calorie intake throughout the day.

Bottom Line: Oatmeal is high in fiber and soaks up water, which makes it incredibly filling. It is more filling than traditional breakfast cereals and may help you eat less throughout the day.

4. Broth-Based Soups

Liquids are often considered to be less filling than solid foods.

However, research shows soups may be more filling than solid meals with the same ingredients.

When soup was eaten at the start of a meal in one study, subjects consumed 20% fewer calories at that meal.

Several studies found that routinely eating soup can reduce calorie intake, enhance satiety and promote weight loss over time.

Stick to broth-based soups, as they tend to be lower in calories than cream-based varieties.

Bottom Line: Soups are very filling foods. Eating soup at the start of a meal may increase satiety, reduce calorie intake and lead to weight loss over time.

5. Legumes

Legumes, such as beans, peas and lentils, are well known for being good sources of fiber and protein.

This, combined with a relatively low energy density, makes them a filling food that may even promote weight loss.

A review of several studies indicates that beans, peas, chickpeas and lentils are 31% more filling than pasta and bread.

Bottom Line: Legumes are high in protein and fiber, which make them very filling. They are also relatively low in calories, which makes them a weight loss friendly food.

 

apple

6. Apples

Fruits are an important part of a healthy diet.

Several studies indicate eating fruit is associated with lower calorie intake and can contribute to weight loss over time.

In particular, apples score very high on the satiety index.

Because apples contain pectin, a soluble fiber that naturally slows digestion, they help you feel full.

They are also over 85% water, which provides volume and improves satiety without adding calories.

It’s important to note that whole, solid fruit increases satiety more than puréed fruit or juice, both of which are not particularly filling.

One study looked at the effects of eating solid apple segments, applesauce or drinking apple juice at the beginning of a meal.

It found that those who ate solid apple segments consumed 91 fewer calories than those eating apple sauce and 150 fewer calories than those drinking apple juice.

Eating apple segments also resulted in higher fullness ratings and lower hunger ratings than other forms of fruit.

Bottom Line: Apples are high in water and soluble fiber but low in calories. Eating whole, solid apples may help you consume fewer calories and contribute to weight loss over time.

7. Citrus Fruits

Similarly to apples, citrus fruits are high in pectin, which can slow digestion and increase satiety.

They also have a high water content. Both oranges and grapefruit contain over 87% water, which means they’re able to fill you up for very few calories.

It has often been suggested that eating grapefruit can promote weight loss.

In one study, obese participants eating grapefruit lost significantly more weight than those given a placebo.

In another study, eating half a grapefruit three times daily at mealtimes for six weeks was associated with modest weight loss and a significant reduction in waist circumference.

When combined with calorie restriction, consuming grapefruit or grapefruit juice before meals resulted in a 7.1% weight loss, a significant reduction in body fat and weight circumference.

However, these results may not be exclusive to grapefruit, as drinking water before meals had similar effects.

Bottom Line: Citrus fruits such as oranges and grapefruit are also weight loss friendly foods. They’re high in fiber and water, which can help you feel full and consume fewer calories.

8. Fish

Fish that are rich in omega-3 fatty acids may increase satiety in people who are overweight or obese.

They’re also loaded with high-quality protein, which is known to be very filling.

In fact, fish scores higher than all other protein-rich foods on the satiety index and ranks second of all foods tested.

One study found the effect of fish on satiety was significantly greater than that of chicken and beef.

Another study found participants who ate fish consumed 11% fewer calories at their next meal than those who ate beef.

Bottom Line: Fish is high in protein and omega-3 fatty acids, which may increase satiety. Fish may also be more filling than other types of protein such as chicken and beef.

9. Lean Meats

Cut Pieces of Red Meat

Lean meats are high in protein and very filling.

In fact, higher-protein diets lead to lower overall calorie intake than lower-protein diets.

One study found that people ate 12% less at dinner after eating high-protein meat at lunch, compared to those who had a high-carb lunch.

Beef scored second highest of all protein-rich foods on the satiety index, but other lean meats such as chicken and pork are also weight loss friendly.

Bottom Line: Meat is high in protein and very filling. Eating high-protein lean meat may help you consume fewer calories at subsequent meals.

10. Cottage Cheese

Cottage cheese is low in calories but very high in protein.

It is also packed with healthy nutrients, including B vitamins, calcium, phosphorus and selenium.

These characteristics make cottage cheese a weight loss friendly food.

One study found that its effect on fullness is similar to that of eggs.

Bottom Line: Cottage cheese is high in protein and low in calories. Its effect on satiety may be comparable to that of eggs.

11. Vegetables

Vegetables are low in calories and high in volume.

They’re also packed with all kinds of beneficial nutrients and plant compounds that make them an important part of a healthy diet.

Furthermore, they’re high in water and fiber, both of which help fill you up.

Research shows that salads, in particular, help satisfy hunger, especially when consumed before a meal.

In one study, participants who ate a salad at the start of a meal consumed 7–12% fewer calories at the meal.

Another study showed that eating a salad at the start of a meal increased vegetable consumption by 23%, compared to eating it with the main course.

In order to keep your salad low in calories, avoid adding high-calorie ingredients and dressings.

Bottom Line: Vegetables are high in water and fiber, which may keep you full for longer. Eating low-calorie salads can help increase your vegetable consumption and decrease your calorie intake.

12. Popcorn

Popcorn is a whole grain and contains more fiber than many other popular snack foods.

It is also high in volume, so it takes up a lot of space in your stomach, despite being relatively low in calories.

Studies have found that popcorn will fill you up more than other popular snacks such as potato chips.

Air-popped popcorn is the healthiest. Commercially-prepared or microwave popcorn can be extremely high in calories and contain unhealthy ingredients.

To keep your popcorn low in calories, avoid adding a lot of fat to it.

Bottom Line: Popcorn is a whole grain that is high in fiber and volume, both of which help you feel full. Studies have found that popcorn is more filling than potato chips.

Take Home Message

Filling foods have certain characteristics. They’re high in volume, protein or fiber and low in energy density.

Including more of these foods in your diet may help you lose weight in the long run.

By Kayla McDonell, RD