Our Better Health

Diet, Health, Fitness, Lifestyle & Wellness


4 Comments

10 Health Benefits Of Kimchi

Health benefits of kimchi include an improved heart health and a healthy digestive system. The wealth [1] of antioxidants in it exercise healing effects in medical conditions like cancer, diabetes, obesity, atopic dermatitis, and gastric ulcers. This flavonoid and probiotic-rich food delays aging, regulates cholesterol levels, and boosts the immune system.

Nutritional Value Of Kimchi

Kimchi is a low-calorie, high fiber, and nutrient-packed [3] side dish. It is a storehouse of a range of vitamins such as vitamin A, vitamin B1, vitamin B2, and vitamin C. It is also rich in essential amino acids and minerals such as iron, calcium, and selenium. It has an impressive assortment of powerful antioxidants and provides an additional benefit of probiotics as well in the form of lactobacillus bacteria. It contains numerous helpful components including capsaicin, chlorophyll, carotenoids, flavonoids, and isothiocyanates and has a low amount of fat and sugar.

Health Benefits Of Kimchi

The delectable taste of kimchi, which has been admired globally comes with a super bonus of health benefits attributing to a range of qualitative evidence supported by several pieces of research. The major health benefits have been discussed below.

Promotes Digestion

Kimchi is an excellent food to promote [4] digestion. It is a source of probiotics attributing to the process of fermentation involved in its preparation. The process of fermentation not only enhances the taste but also creates healthy bacteria, Lactobacillus, which is required by the body to keep a healthy state of intestinal flora. It is made from [5] cabbage which is already well known for its detoxification qualities and helps the body in getting rid of the wastes and toxins. It aids in cleaning up the intestines and stimulates better assimilation of nutrients in the body. Fiber content present in kimchi also assists in stabilizing the bowel movements and prevents constipation.kimchi

Regulates Cholesterol

Regular consumption [6] of kimchi has a beneficial effect on the levels of cholesterol. Garlic, which is used to prepare it is rich in selenium and allicin. Allicin is an eminent component which helps in lowering the cholesterol levels, thereby, reducing the risk of developing cardiac disorders such as strokes and heart attacks. Selenium also exerts a protective effect on the artery walls by preventing the build-up of plaque and decreasing the threat of atherosclerosis. An investigative study [7] has advocated that fermented kimchi helps in lowering the total cholesterol and LDL (bad) cholesterol along with the concentration of blood glucose in the body.

Antioxidant Properties

Kimchi varieties are rich in powerful [8]antioxidants which are natural scavengers. These antioxidants along with phenols and flavonoids present in it exert a protective effect against oxidative damage and shield the body from the harmful effects of oxygen free radicals.

Treats Atopic Dermatitis

The presence of lactobacillus bacteria in kimchi makes it a multi-talented condiment. It extends its therapeutic effects on various skin ailments such as atopic dermatitis which is characterized by increased levels of immunoglobulin E and skin lesions such as edema and hemorrhage. A study [9] conducted in this regard has shown that healthy bacteria present in fermented kimchi exerts suppressive effects on mite-induced dermatitis and helps in reducing inflammation.

Weight Loss

Kimchi is a source of healthy lactobacillus bacteria which the body utilizes for its healthy functioning. This good bacterium also assists in weight loss by controlling the appetite and reducing the blood sugar levels. The fiber content present in it keeps your body full and your hunger satisfied for a longer duration preventing you from overeating. A study [10] conducted on obese patients has validated the favorable effects of fermented kimchi on the body with respect to body mass index (BMI) and body fat, which helps in reducing the development of factors implicated in metabolic syndrome.

Boosts Immune System

The multi-nutrient packed kimchi is rich in a range of flavonoids and phenolic components. The variety of ingredients including ginger, garlic, and peppers involved in the preparation of kimchee are super protectors which are renowned for their beneficial effect on the immune system. They help in fighting infections and are valuable in curing cold and flu symptoms.

Anti-aging Properties

Another valuable benefit provided by kimchi is its anti-aging qualities, which can be attributed to the presence of antioxidants and vitamin C. A study [12] evaluating the anti-aging activity of kimchee has revealed that it helps in regulating and attenuating the inflammation that speeds up the aging process. The same study also showed promising results with regard to factors like reduced oxidative stress in the cells, inhibition of lipid peroxidation and extended lifespan in the subjects, making kimchi a potent anti-aging component.

Prevents Cancer

Kimchi is a valuable food which helps in reducing the risk of development of various cancers. A study [13] performed on its samples has validated its anti-cancer properties. Cabbage present in it contains healthy flavonoids which are known to inhibit the growth of cancer cells. Other powerful cancer fighters present in cruciferous vegetables such as cabbage are glucosinolates. Glucosinolates break down to form isothiocyanates which are well-known for their effectiveness against cancerous cell growth.

kimchi

 

Treats Diabetes

A study [14] conducted on high-fat-diet-fed type-2 diabetics who were given kimchi revealed the anti-diabetic properties of this Korean delicacy. The study showed better glucose tolerance and lower levels of fasting glucose after eating a kimchi-containing diet in the diabetics. It also suggested that this Korean delicacy can prove more useful in diabetes if it is eaten with a normal or low-fat diet instead of high-fat food.

Reduces Gastric Ulcers

Kimchee exerts therapeutic [15] effects in gastritis and peptic ulcer disease caused by Helicobacter pylori bacteria. A study conducted in this regard has shown that the antagonistic activity of kimchi attributes to the abundance of Lactobacillus bacteria which inhibit the harmful pathogens from connecting to the human gastric cancer cells.

Culinary Uses

Kimchi is prepared and enjoyed in many varieties. It makes an excellent side dish or pre-meal appetizer. It can also be added to soups, stews or rice dishes. Kimchee serves deliciously well even as a topping on sandwiches or with pancakes.

Other Uses

Various studies [16] have proven the effectiveness of kimchi in curing avian influenza or bird flu virus and many other viral diseases affecting the poultry.

How To Prepare Kimchi?

Kimchi can be prepared in different ways depending on one’s taste and preference. There are many types available which are made using vegetables including Chinese cabbage, leek, scallion, radish, cucumber, ginseng, garlic, cayenne peppers, and Indian mustard leaves. These vegetables are mixed with desired spices and seasonings and kept for fermentation for specified days under favorable conditions.

Side Effects Of Kimchi

Digestive Health: Excess consumption of kimchi can lead to digestive problems. Research [19] conducted in this regard has suggested that too much of it may aggravate the risk of developing gastric cancer. Due to fermentation, kimchi is abundant in fiber which may cause gas and bloating issues in susceptible individuals. It is advisable, to begin with adding small quantities of kimchi in the diet in order to assess its effects.

Cardiac Functions & High Blood Pressure: Individuals suffering from high blood pressure should be cautious while eating kimchi because of the presence of high salt concentration, which gets further accentuated during the fermentation process. However, a study [20] conducted on hypertensive subjects revealed that even under the conditions of hypertension, eating low-sodium kimchi may not exert harmful effects on the blood pressure and cardiac activities. It is always advisable to consult a medical professional before considering it for therapeutic usage.

Summary

Kimchi possesses [21] anti-mutagenic, anti-bacterial, and anti-carcinogenic properties. The American health magazine [22] has ranked it among the world’s five healthiest foods. The wealth of strong antioxidants and healthy bacteria in kimchi encourages the production of collagen which aids in improving skin elasticity, delaying skin aging, and promoting healthy and youthful skin. Lactobacillus bacteria present in it is valuable for yeast infections. It combats nutrient depletion, builds stamina, and serves as a delicious and nutritious condiment.

References

  1. http://www.actahort.org/books/483/483_47.htm
  2. http://www.nytimes.com/2008/02/24/world/asia/24kimchi.html?_r=0
  3. http://www.fasebj.org/cgi/content/meeting_abstract/24/1_MeetingAbstracts/340.6
  4. https://www.ncbi.nlm.nih.gov/pubmed/21215484
  5. https://www.ncbi.nlm.nih.gov/m/pubmed/23633413/?i=3&from=/23788520/related
  6. https://www.ncbi.nlm.nih.gov/pubmed/23444963
  7. https://www.ncbi.nlm.nih.gov/m/pubmed/23444963/?i=6&from=/23788520/related
  8. http://agris.fao.org/agris-search/search.do?recordID=KR2008003825
  9. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2672.2011.04981.x/abstract
  10. https://www.ncbi.nlm.nih.gov/pubmed/21745625
  11. http://books.google.co.in/books?id=uV2Oi0g_TB4C
  12. http://link.springer.com/article/10.1007/s10068-011-0091-9
  13. http://online.liebertpub.com/doi/abs/10.1089/10966200360716544
  14. https://www.ncbi.nlm.nih.gov/pubmed/19459728
  15. https://microbewiki.kenyon.edu/index.php/Gastritis_and_Peptic_Ulcer_Disease_Caused_by_Helicobacter_pylori
  16. http://www.asiabiotech.com/publication/apbn/09/english/preserved-docs/0907/0272_0277.pdf
  17. http://books.google.co.in/books?id=eqkYpqkYPngC
  18. http://books.google.co.in/books?id=s4_w572f1MgC
  19. http://www.sfgate.com/health/article/In-Korea-everybody-loves-kimchi-especially-2496596.php
  20. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3439575/
  21. http://link.springer.com/article/10.1023%2FA%3A1011921427581
  22. http://www.health.com/health/article/0,,20410300,00.html
February 14, 2018  

source: OrganicFacts
Advertisements


Leave a comment

Eating Out May Disrupt Your Hormones

When you think of things that throw your hormones out of balance, you probably think of stress, or maybe trans fats or alcohol consumption, or perhaps pollution you breathe. You probably don’t think of a visit to a local restaurant, a dinner out at a nearby bistro or an evening at your favorite pub. But, eating out may be wrecking your hormones more than you realize, according to a new study.

The research, published in the medical journal Environment International, found that eating out in restaurants, cafeterias or other food establishments may be exposing people to increased amounts of the hormone-disrupting chemicals known as phthalates.

Phthalates, pronounced THAL-ates are chemicals that are well-established as hormone disruptors that have been linked to asthma, birth defects, cancer (especially breast cancer), infertility (in both men and women) and obesity. They have been linked to increased androgen levels in both males and females.

Androgens are sometimes called “male hormones” even though both men and women have them. In healthy amounts androgens can help regulate sexual development, libido, hair growth or loss, and other characteristics. However, when we are exposed to chemicals like phthalates they can throw our delicate hormonal balance out of whack.

The researchers examined the diets along with urine samples from 10,253 study participants to determine their exposures to phthalates in food they ate at home compared to food they ate out at a range of establishments. They found that eating out significantly increased peoples’ exposure to the toxic compounds. Some foods like sandwiches or cheeseburgers were found to increase phthalate exposures when eaten out but not when they were eaten at home, which could be a reflection of peoples’ tendency to make certain foods from scratch or use more wholesome ingredients compared to many of the packaged, processed foods that are used in restaurants, replete with all the phthalates and other chemicals found in these foods.

In addition to food sources, phthalates are also prevalent as a coating used in pharmaceutical and over-the-counter drugs, in shower curtains, vinyl flooring, in cosmetics and body care products, hairspray, in baby care products, as an ingredient in insecticides and in most ingredients that contain “fragrance”—perfumes, colognes, air fresheners, fabric softeners, laundry detergents, etc.

Phthalates

 

How Can You Reduce Your Exposure to Hormone-Disrupting Phthalates?

There are many ways you can reduce your exposures to these nasty chemicals. Here are a few to help you reduce your risk:

1)     Avoid fast food establishments as most use packaged and processed foods that contain phthalates.
2)     Eat out less often. It takes only minutes in a day to make a quick salad, sandwich or soup for your workday lunch or dinner from scratch with wholesome, unprocessed ingredients.
3)     If you’re going to eat out, choose places that refrain from using frozen and packaged foods or sauces as most of these items contain phthalates. If in doubt, ask. Even many so-called “high end” or fine-dining establishments use packaged sauces that are best avoided.
4)     Avoid scented personal care products, including: hairspray and other hair care products, skin care products, cosmetics, deodorant, body washes, etc. Choose unscented varieties devoid of fragrance and other toxic chemicals.
5)     Use only unscented laundry detergent available at your local health food store. Avoid using fabric softeners which only add a layer of toxic fragrances and hormone disruptors to your body.
6)     Avoid using vinyl-based products as much as possible. While vinyl plank flooring has become popular, it tends to be high in phthalates, and increase your risk of exposure to the toxins.
7)     Choose natural water-repellent shower curtains instead of vinyl ones since the latter tend to contain phthalates.
8)     Choose wooden windows over vinyl ones.
9)     Use only glass containers for food storage, not plastic.
10)   Avoid products that have the #3 recycling symbol on the packaging, since they contain PVC.

 

By: Michelle Schoffro Cook      April 5, 2018
Follow Michelle at @mschoffrocook

Dr. Michelle Schoffro Cook, PhD, DNM is the publisher of the free e-news World’s Healthiest News, president of PureFood BC, and an international best-selling and 20-time published book author whose works include: The Cultured Cook: Delicious Fermented Foods with Probiotics to Knock Out Inflammation, Boost Gut Health, Lose Weight & Extend Your Life.


1 Comment

Everyday Items That May Be Hindering Your Health

Everyday items could be causing everything from mood swings to infertility and even cancer.

Chemicals found in plastic water bottles, lipsticks, tampons, receipts and even tap water are wreaking havoc on people’s hormones, which is linked to a growing number of health problems.

Research published earlier this week reveals more than 90 percent of receipts contain the so-called ‘gender-bending’ chemical Bisphenol A (BPA) and its ‘healthier alternative’ Bisphenol S (BPS), which are associated with autism, ADHD, type 2 diabetes, premature births and early onset of puberty, reports the Daily Mail.

Researchers from the Michigan-based non-profit organisation The Ecology Center analyzed 207 paper receipts from a variety of businesses collected between January and April 2017.

However despite their health concerns, such chemicals are frequently added to day-to-day products to provide scent and extend their shelf life.

In a piece for Healthista, editor Anna Magee speaks to reproductive experts, nutritional therapists and dentists on how to avoid such chemicals and detox your life.

Most of us take the mood swings, grumpiness and weight gain of fluctuating hormones for granted.

Yet toxic chemicals in our everyday lives could be making things worse.

Known as ‘xenoestrogens’, these substances, which are found in plastics, cosmetics, sanitary products, receipts and even tap water can mimic the hormone oestrogen and are linked not only to middle-aged spread but also reproductive problems, learning difficulties and even cancer.

Dr Channa Jayasena, a clinical senior lecturer and consultant in reproductive endocrinology at Imperial College London, said: ‘We know little about such hormone altering chemicals but our increasing exposure to them is a cause for concern.

“The risk of these endocrine-disrupting chemicals is enormous and we’re just at the start of learning what they do.
“My concern is that by the time we work out what they actually do, they might be causing diseases we don’t know about.”

So, what can you do? Start by identifying the sources of fake oestrogens in your life and take simple steps to detox them.

Water bottles and other plastics

Dr Jayasena said: “Chemicals in plastics behave like oestrogen in our systems when they reach our bloodstream.”

Chief offender is BPA found in plastic containers, water bottles and linings for tinned foods and drinks. A 2016 study revealed that two out of three canned foods tested positive for BPA.

A survey by the US Centers for Disease Control found that 93 per cent of the population had measurable amounts of BPA in their systems.

According to the Food Standards Agency, there is European legislation in place which sets a maximum limit on BPA from plastics, however, such risks are being re-evaluated by European authorities due to new scientific information emerging on the dangers of such exposure.

BPA and other xenoestrogens not only effect our waistlines but also our reproductive systems.

Dr Jayasena said: “Men’s sperm counts have decreased dramatically in the last decade and we’re now looking at the part hormone disrupting chemicals in our packaging, food and water play in this.”

Dr Sara Gottfried, a US gynaecologist and author of “The Hormone Cure” and new book, “Younger: The Breakthrough Programme to Reset our Genes and Reverse Ageing”, added: “Many problems are co-related with BPA from weight gain to endometriosis and breast cancer.

“This and other xenoestrogen chemicals build up in the body, accelerating ageing and hindering weight loss.”

While some companies market plastic products as “BPA-free”, substitute chemicals, known as BPS and BPF, may be just as dangerous.

A study in April this year by the Endocrine Society in the US found that exposure to BPS could increase the aggressiveness of breast cancer, while a paper published in Environmental Health Perspectives in 2015 reviewed 32 studies on the subject and found that all three chemicals are hormone disruptors linked to problems such as weight gain and reproductive issues.

• How to detox

Dr Gottfried said: “Heat, microwave use, dishwasher use or leaving a plastic water bottle in the sun can all release such chemicals.

“Avoid microwaving your food with cling film over it or while it’s in plastic containers.
“Use stainless steel water bottles where you can, cook and store food in glass, ceramic or stainless steel, and use glass or microwave-safe ceramics for microwaving.
“If you must use plastic containers, don’t heat them up”.

She also recommends people try and avoid tinned food or rinse their contents carefully before eating.

BPA is found in plastic water bottles, containers, and linings for tinned food and drinks.

Tap water, fruit and vegetables

Dr Jayasena said: “Xenoestrogen chemicals are in our water supply, fruit and vegetables thanks to their use in farming.”

For example, while DDT, a pesticide with proven hormone-disrupting effects, has been banned, glyphosate, a similar xenostrogen chemical linked to breast cancer and obesity, which is found in the common garden weedkiller Round Up, is still commonly available.

Round Up is one of many pesticides used in Britain that is made from chemicals with endocrine-disrupting effects, the residues of which leech into our tap water and rivers, and remains on the skin of fruit and vegetables.

• How to detox

Dr Gottfried recommends people drink filtered water, using carbon to absorb impurities and contaminants. Reverse osmosis filters can remove more chemicals but require fitting to taps at home and can be expensive.

Nutritional therapist Daniel O’Shannessy, who is also director of Bodhimaya Health Centre, says people can remove pesticides from the skin of fruit and vegetables by soaking them in water and a tablespoon of apple cider vinegar before cooking.

They can also check websites such as the Environmental Working Group (ewg.org) for their “dirty dozen” and “clean fifteen”; lists of the most and least contaminated produce.

More than 90 percent of receipts contain the so-called ‘gender-bending’ chemical BP.

Receipts, sanitary products and napkins

Dr Gottfried said: “The shiny coating on receipts is giving you a dose of BPA every time you touch it and we know the skin absorbs such chemicals almost as well as when we ingest them.”
France is seeking an EU-wide ban on till receipts containing BPA, with most of its receipts being marked “sans BPA”.

Such sources of synthetic oestrogens contribute to your overall toxic load, increasing your risk of oestrogen dominance.

Other paper sources of synthetic oestrogens include sanitary towels and tampons, which contains xenoestrogens called dioxins – and are linked to fertility, immune issues and endometriosis – as well as table napkins, which may be coated in BPA.

• How to detox

Try and go receipt free, and look for organic or dioxin-free sanitary products that have not been bleached or dyed. Also opt for unbleached, uncoated napkins.

Dental fillings

BPA is used in plastics, with the resins making composite fillings.

A 2010 study published in the Journal of Dental Hygiene found that BPA was found in the saliva of all 30 dental patients surveyed, while further research in 2012, published in the journal Paediatrics, found that children fitted with fillings made from a substance containing BPA show more behavioural problems compared to their peers.

• How to detox

Dentist James Goolnik of Bow Lane Dental Group, said: “Composite fillings are the least expensive [around £200 a tooth (NZD $380)] of all fillings after mercury and, as mercury has so many confirmed dangers, many people opt for composite.

“But while many contain synthetic oestrogen chemicals such as BPA, it’s now possible to ask for BPA-free composite fillings”.
“Alternatively, porcelain won’t contain toxic chemicals, is tooth coloured, more durable than composite and is about £500 (NZD $952) a tooth.
“If the filling isn’t visible, the best option is gold as it virtually lasts forever, is kinder to your tooth and also contains no toxic chemicals but at around £800 (NZD $1,523) a filling, it’s pricey.
“I still wouldn’t recommend having plastic fillings removed because of the BPA effect as the removal process not only leads to more tooth tissue being damaged it can aggravate the release of more chemicals into the system.”

Cosmetics

That lipstick you cannot live without could be adding to your ostrogen load.

In the 1990s, chemicals known as parabens in body creams, lipsticks, scrubs, shampoos and more were identified as xenoestrogens, while in 2004, British researcher Philippa Darbre found them in breast cancer cells.

Likewise, a family of chemicals known as sulphates also have an oestrogen-like effect on the body and are responsible for create lathers in shampoos, body washes, detergents and soaps.

• How to detox

Dr Gottfried said: “Ignore labels such as chemical-free, ‘natural’ or ‘for sensitive skin’ as these have no regulated meaning.

Instead, opt for organic skincare and make-up, or products that are sulphate- and paraben-free.

Perfumes and scented candles

Dr Gottfried said: “Many commercial perfumes and scented candles contain phthalates, a class of chemicals found in a surprising number of common household products such as shampoos, deodorants, body washes, hair gels and nail polishes.
“There’s little doubt phthalate chemicals are a key contributor to the inability to lose weight caused by oestrogen dominance.
“Research into the effects of phthalate is ongoing but we know they cause birth defects in male foetuses, are associated with poor egg quality and early menopause in women, and may also be linked to breast cancer and type-2 diabetes”.

• How to detox

Look for phthalate-free cosmetics and unscented candles, ideally made from soya wax.

High-grade essential oils in water used with an oil burner are also a great alternative to scented candles.

Three ways to detox excess oestrogen

Simple lifestyle measures can help, according Daniel O’Shaunnessy, a nutritional therapist at the Bodhimaya Health Centre.

• Eat flaxseeds

Constipation can lead to hormonal imbalances by slowing down the passing of hormones from food and water through the gut. Flaxseeds contain fibre that helps ease this.

Try a tablespoon soaked overnight in a glass of water and then added to smoothies, porridge or taken neat.

• Eat broccoli

Cruciferous vegetables, such as broccoli and cauliflower, help detoxify fake oestrogen from the liver.

• Take a probiotic

This will help balance the beneficial microflora in your gut, which can help increase motility, meaning you eliminate toxins faster.

By: Anna Magee, Alexandra Thompson       Daily Mail      21 Jan, 2018 
 


Leave a comment

Fun Fact Friday

  • Dark chocolate and cheese have antibacterial properties that inhibit tooth decay, according to experts.

  • Your body is actually designed to get 4 hours of sleep twice per day instead of 8 hours once.

 

  • Studies have found that smiling is 69% more attractive than wearing makeup.

  • Onions have been proven to lower cholesterol, reduce chances of a stroke, and reduce chances of various types of cancer.

Happy Friday!
source: @Fact


1 Comment

Fun Fact Friday

  • Intelligent men tend to be more faithful.

  • If you eat pizza once a week it can decrease the risk of esophageal cancer.

  • Cheaters think everyone cheats. Liars think everyone lies.

  • People with anxiety perceive the world differently — their brain lumps both safe and unsafe things together and labels them all unsafe.

Happy Friday!
source: @Fact


Leave a comment

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


2 Comments

Gum Disease Tied to Yet Another Deadly Illness

Add one more reason to why you should brush and floss regularly: Gum disease bacteria are now tied to higher odds of esophageal cancer.

The study tracked the oral health of 122,000 Americans for 10 years. It found that the presence of two types of bacteria linked with gum disease may hike the risk of the cancer.

The presence of one oral bacterium in particular, called Tannerella forsythia, was tied to a 21 percent increase in the odds of developing esophageal tumors, said a team led by Jiyoung Ahn. She is associate director for population science at NYU Langone Health in New York City.

Gum disease has already been linked in numerous studies to a heightened risk of the number one killer, heart disease. But an expert in esophageal cancer who reviewed the new findings stressed that researchers can’t yet prove a causal link to esophageal tumors.

“What is not clear is whether the presence of these bacteria or the resultant periodontal disease is primarily responsible for the development of cancer,” said Dr. Anthony Starpoli, associate director of esophageal endotherapy at Lenox Hill Hospital in New York City.
Still, Starpoli believes specialists should “consider a proper evaluation of the oral cavity as well as the remainder of the digestive tract in the hope of early diagnosis of esophageal cancer.”

Esophageal cancer is the eighth most common cancer and the sixth leading cause of cancer death worldwide, the study authors noted. Because it’s often only diagnosed at an advanced stage, five-year survival rates are between 15 to 25 percent.

Ahn said, “Esophageal cancer is a highly fatal cancer, and there is an urgent need for new avenues of prevention, risk stratification, and early detection.”

The news from the study wasn’t all bad: The investigators found that some types of mouth bacteria were associated with a lower risk of esophageal cancer.

Learning more about the bacteria communities living naturally in the mouth “may potentially lead to strategies to prevent esophageal cancer, or at least to identify it at earlier stages,” Ahn noted in a news release from the American Association for Cancer Research.

One other expert agreed.

“The study suggests that there are some oral bacteria that may contribute to the development of this highly deadly cancer but also, and very importantly, suggests that some bacteria may provide a protective effect,” said Dr. Robert Kelsch. He’s an oral pathologist at Northwell Health in New Hyde Park, N.Y.

“Knowing which bacteria are good and which are bad could lead to preventive treatments or serve as predictors of risk of development of this cancer,” Kelsch said.

Ahn added that good oral health – including regular tooth brushing and dental visits – may help protect against gum disease and health conditions associated with it.

The study findings were published Dec. 1 in the journal Cancer Research.=

By Robert Preidt   HealthDay Reporter      FRIDAY, Dec. 1, 2017    HealthDay News

SOURCES:  Robert D. Kelsch, DMD, oral pathologist, Northwell Health, New Hyde Park, N.Y.; Anthony Starpoli, M.D., associate director of esophageal endotherapy, Lenox Hill Hospital, New York City;  American Association for Cancer Research, news release, Dec. 1, 2017

source : www.webmd.com   WebMD News from HealthDay