Science vitamin and ans

Questions on vitamins and minerals

MVM sales benefit from misleading commercials, and people are pleased by the well-known placebo effects. The answer is perhaps multifactorial. Is a daily vitamin necessary? Ascorbic acid and the glycosaminoglycans. Calcium supplements with or without vitamin D and risk of cardiovascular events: Reanalysis of the Women's Health Initiative limited access dataset and meta-analysis. Once absorbed into the bloodstream, the liver and kidneys change calciferol into calcitriol, which is the biologically active form of vitamin D. Fourth, many believe that MVMs, if not useful, will not harm. Even in this nutrition-deficient population, results of the trial showed no benefit for two of the other MVM supplements factors B and C; see Table 1 , and extended follow-up showed adverse results for one of the supplements factor A containing zinc and vitamin A. Vitamin E in the primary prevention of cardiovascular disease and cancer: The Women's Health Study: A randomized controlled trial. Effects of lowering homocysteine levels with B vitamins on cardiovascular disease, cancer, and cause-specific mortality: Meta-analysis of 8 randomized trials involving 37 individuals.

Vitamin D Nicknamed the sunshine vitamin, vitamin D is produced by your skin when it's exposed to sunlight.

The results were deemed to be inconsistent with several of the previously published observational studies, based on which the trial had been designed to reduce the risk of lung cancer.

However, this trial was conducted in an area where micronutrient intake was quite poor, and thus supplements might have had a beneficial role. Summary: Dietary vitamin D can be classified as vitamin D2, found in mushrooms and plants, and vitamin D3, found in animal-derived foods.

quiz on vitamins and minerals with answers pdf

The answer is perhaps multifactorial. Studies suggest that vitamin A acts by suppressing the measles virus A diet rich in omega-3s—found in fatty fish, like salmon, tuna and mackerel, as well as in walnuts, flaxseed and canola oil—and low in saturated fats may help protect against heart disease, stroke, cancer and inflammatory bowel disease.

vitamins questions and answers pdf

Most notably, Linus Pauling, a two-time Nobel Laureate and a towering figure in chemistry, believed that vitamin C could prevent cancer and increase the life expectancy of cancer patients.

The most abundant dietary sources of vitamin A are liver, fish liver oil and butter. Vitamin D3 is more efficiently converted into calcitriol than vitamin D2.

questions on vitamins and minerals

Nevertheless, while getting enough vitamin A is vital, too much may cause harm.

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Vitamin and Mineral Supplements: Do We Really Need Them?