Human Nutrition 3(3+0)

Lesson 3 : Recommended Dietary Allowances for Nutrients

Vitamins

1. Vitamin A


2. Vitamin D
   Vitamin D is now considered more a pro-hormone than a vitamin. It can be synthesized in the body in adequate amounts by simple exposure to sunlight just for 5 minutes per day.
   
   In prescribing medicinal vitamin D under certain situations where there is minimal exposure to sunlight, a specific recommendation of a daily supplement of 400 ?g is made.


3. Vitamin E
   Vitamin E requirement is linked to that of essential fatty acids (linoleic and linolenic acids). The requirement of vitamin E (tocopherol) suggested is 0.8 mg/g of essential fatty acids.


4. Vitamin K
   The committee considered that no recommendation needs to be made for this vitamin, since vitamin K deficiency in India is seen only occasionally in premature newborn infants. A dose of 0.5-1.0 mg of vitamin K administered by the intramuscular route to such infants is suggested.


5. Thiamine


6. Riboflavin


7. Nicotinic acid


8. Folic acid


9. Vitamin B12


10. Vitamin C