Vitamin A Case Study

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Recommended: Bio chemical role of vitamins

Vitamins are natural substances that are essential to life. The work by regulating body processes. The body only needs small quantities but the body cannot produce or store enough to meet our needs. The vitamins cannot be synthesized by mammalian cells, so therefore must be supplied in the diet. Here I will discuss Vitamin A and • The functions • Key dietary sources • RDA • Symptoms of deficiency • Toxicity levels and symptoms. Vitamin A is a fat soluble vitamin so it can be stored in the body. It is insoluble in water. It can withstand temperatures of up to 60,100 and 120°C. Sunlight will cause vitamin A decomposition. It is stable in an oxygen free environment. It is found in the liver and found in the retina of the eye as retinoid. It plays an important part in many bodily functions especially for tissue repair, keeping skin and mucous in good conditions and to build and take care of bones, hair, nails and teeth. Vitamin A is known for enhancing our immune system, preventing many microbial diseases. It also plays a role in blood cell formation and gene transcription, therefore maintaining good standard of blood and blood cells. Functions …show more content…

It also has anti-bacterial properties which help combat skin infections in wounds. Lack of vitamin A can lead to delayed healing in the mouth. Vitamin A has anticancer properties. It is an antioxidant which encourages the non-existence of cancer cells especially in the breast tissue, mouth, lung and stomach. It improves conditions for people with leukaemia and for people undergoing chemotherapy. It has been shown to help people with chronic lung disease and help prevent the occurrences of heart

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