A2 Coursework on "Antioxidants Vitamins Supplements as Food Sources"

A2 Coursework 6 pages (1981 words) Sources: 1+

[EXCERPT] . . . .

Other sources include avocados, sesame seeds, sunflower, pumpkin, nuts and beans. Juicing vegetables also ensures that substantial magnesium is in the diet (Mercola).

Do you consume these foods on most days?

No.

What is selenium. What are some food sources?

Selenium is one of the important dietary minerals required by the body in daily diet. It can be found in a few group of proteins. Scientists have called this group of proteins "selenoproteins." Minerals play the role of an antioxidant. It assists in keeping tissues healthy and so guarding against cell damage. Selenium assists in keeping the thyroid and the immune system working properly. It might assist in protecting the individual from developing certain kinds of cancers and chronic illnesses. Further studies are still going on the mineral, though (Dietitians of Canada).

What is the safe upper limit?

The Institute of Medicine of National Academics' Food and Nutrition Board (FNB) developed Dietary Reference Intakes (DRIs) which recommend the amount of nutrients to be consumed. The safe upper limit for selenium is 400 mcg for adults and between 45 and 280 mcg for children (NIH office of Dietary Supplements).

What types of signs may be seen with selenium toxicity?

Tachycardia and hypotension are some of the early signs of acute toxicity. Cardiac abnormalities in the earlier phase often indicate flattening and inversion as well as a prolonged QT interval. Direct myocardial depression and refractory hypotension from peripheral dilation often precede death. Abdominal pain, diarrhea, vomiting and nausea are common but pulmonary edema may present a very serious situation. Neurologic symptoms could include coma, delirium, confusion, restlessness, muscle spasms and tremor. Mucosal damage could occur to the stomach, esophagus and oral cavity in case caustic compounds are ingested (Nuttall).

Minerals which may help improve hypertension

Magnesium, calcium, potassium and sodium mineral elements help a great deal in regulating blood pressure. Particularly, they help in controlling arterial resistance. Potassium and sodium also help in the regulation of fluid balance and so influence cardiac output (Karppanen).

References

Dietitians of Canada. Food Sources of Selenium. 4 July 2014. 17. September 2015.

Antioxidants World. How Antioxidants Work? n.d. 17 September 2015.

Beekman wines and liquors. The health benefits of wine. n.d. 17 September 2015.

Bellows, L. and R. Moore. "Diet and Cancer Prevention." Fact Sheet. 2014.

Karppanen, H. "Minerals and blood pressure." Ann Med. (1991): 299-305.

Key, Timothy J, et al. "Diet, nutrition and the prevention of cancer." Public Health Nutrition (22004): 87-200.

Medicinal Food News. How Antioxidants Work. 20 July 2015. 17 September 2015.

Mercola. Can Magnesium Reduce Your Risk of Diabetes? 30 March 2015. 17 September 2015.

Mercola.com. Red Wine and Tea Can Help Regulate Your Blood Sugar. 24 April 2008. 17 September 2015.

NIH office of Dietary Supplements. Selenium: Dietary Supplement Fact Sheet. 2 July 2013. 17 September 2015.

Nuttall, Kern L. "Evaluating Selenium Poisoning." Annals of Clinical & Laboratory Science… READ MORE

How to Reference "Antioxidants Vitamins Supplements as Food Sources" A2 Coursework in a Bibliography

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