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Brianna R.
@brianna_rr795
The work of free-radicals
Free radicals are essential for our health. They are used as molecular messengers that send signals from one region of the cell to another. Without free radicals, cells would continue to grow and divide uncontrollably, also known as cancer.
Free radicals also increase when our bodies are infected with an unwanted bacterium or virus. Free radicals act as a warning method to our immune system.
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Brianna R.
@brianna_rr795
The problem with taking too many vitamins
Individual Supplement Studies
Looking at individual studies won't determine if vitamin supplementation is good for you. They're scientifically dense and the conflicts of interest can be very hard to spot.
"Systematic revi...
Research Reviews’ Results
- If you are healthy, and have a modern balanced diet, taking multi-vitamins and high-dose antioxidants may shorten your life.
- There’s no evidence to support antioxidant supplements for primary or secondary prevention of diseases.
- Beta-carotene and vitamin E seem to increase mortality, and so may higher doses of vitamin A.
- Antioxidant supplements need to be considered as medicinal products and should undergo sufficient evaluation before marketing.
- The functions of minerals and vitamins are understood largely by their deficiency diseases so there’s no certainty what they all do or how they interact.
- Antioxidants soak up toxic, chemically-reactive by-products of metabolism called free radicals. These free radicals, left unchecked, can cause damage to DNA and may be linked to cancer.
- Your body's immune system fights infections by using free radicals to kill bugs. Several of the minerals and vitamins in excess can cause damage.
Supplement Usage Recommendations
- Folic acid for the women thinking of having a baby and pregnant women up to week 12 of the pregnancy.
- Vitamin D for all pregnant and breastfeeding women, those aged six months to five years or over 65 and for people who are not exposed to much sun.
- Vitamins A, C and D supplementation are recommended for all children aged six months to four years, especially those not eating a varied diet.
- If they are prescribed to you for a medical condition.
Vera D.
@vera_qd95
New vitamin supplement study finds they may do more harm than good
Results On Multivitamins
- In studies testing the four common supplements of multivitamins, vitamin D, calcium and vitamin C, there was no reduction in the incidence of heart disease, stroke or premature death. ...
Multivitamins Research Review
- There’s some evidence for taking folic acid for the prevention of heart disease and stroke, and also for taking B-complex vitamins that include folic acid for stroke.
- As there was no reduction in early death from taking supplements, it does not work against poor dietary habits.
- Taking supplements is very different from eating whole foods. The latter rarely causes complications and the former may lead to the consumer missing out on healthy phytonutrients found in the former.
Katherine L.
@katherine_gll245
The Shady Link Between Sunscreen and Your Health
Vitamin D and sunshine
Vitamin D is essential for calcium absorption and many other biological processes. Lower levels of Vitamin D increase the rates of almost every disease like cancer, diabetes, osteoporosis, cognitiv...
Vitamin D supplementation
Getting vitamin D through supplementation shows zero benefits. A study over a period of 5 years found supplementing with Vitamin D had no impact on cancer, heart disease, or stroke.
A number of researchers now argue that people with high vitamin D levels are healthy not because of the vitamin, but because they get plenty of exposure to the sun. Vitamin D is just a marker of that fact.
Sunlight is good for you
A dermatologist discovered our skin uses sunlight to make nitric oxide, a molecule in the body that dilates blood vessels and lowers blood pressure.
He exposed volunteers to the equivalent of 30 minutes of summer sunlight without sunscreen. The result? The nitric oxide levels in the volunteers went up, and their blood pressure lowered. Because of the connection of high blood pressure to heart disease and strokes, this discovery can prevent millions of deaths globally.
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