Vitamins,
As well as the major nutrients; Carbohydrates, Proteins and Fats, the body needs some substances in much smaller quantities. These are known as Vitamins. For RDAs see the table at the foot of the article.
A -- Retinol, A deficiency causes Night-blindness. Also ... ... ... ..important in genetic health and reduces risk of heart ... ... ... ..disease. Liver and leafy greens.
B1 - Thiamine Aids the break down
of carbohydrates and fats ......for the release of energy.
B2 - Riboflavin is also needed for the body's production of .......energy.
B3 - Niacin, Pellagra other problems
B5 - Pantothenic acid,
B6 - Is needed for protein synthesis and production
of red ...... blood cells.
B6 - Pyridoxine, Anemia[23] peripheral neuropathy.
B7 - Biotin . Deficiency can result in scurvy and eczema. It is ...... found in Liver, Soya and Lentils - Also sometimes known ...... as Vitamin H
B9 - Folic Acid, Essential in pregnancy a deficiency can cause ......birth defects
B12 - Cyanocobalamin, anemia results from a deficiency
C - Ascorbic Acid, Found in fruit, most commonly citrus fruits; ......oranges lemons, limes. In the 18th century was used to ......prevent scurvy in sailors.
D - Calciferol. A deficiency can cause rickets and bone ...... .... disease. Found in oily fish liver and eggs.
E - Tocopherols,
K - Required for blood coagulation and bone growth also vein ......and artery health
Other vitamin related nutrients and the vitamins that have been declassified as such:-
Adenine - Was previously classified as Vitamin B4. Adenine does fuction in conjunction with Vitamins B1 and B2 in energy metabolism.
Inositol - This was originally classified as a Vitamin: (Vitamin B8) Aids redistribution
of fat. Helps nourish brain cells and optimises the the benefits of vitamin
E.
Vitamin P - Polyphenols Bioflavonoids, flavonoids

RDA - Recommended Dietary Intake
| Vitamin |
RDA |
Unit |
| Vitamin A |
900 |
µg |
| Vitamin C |
90 |
mg |
| Thiamin (B1) |
1.2 |
mg |
| Riboflavin (B2) |
1.3 |
mg |
| Niacin (B3) |
16 |
mg |
| Pantothenic acid (B5) |
5 |
mg |
| Vitamin B6 |
1.3 |
mg |
| Vitamin B7 Biotin |
30 |
µg |
| Folate (B9) |
400 |
µg |
| Cyanocobalamin (B12) |
2.4 |
µg |
| Vitamin C |
90 |
mg |
| Vitamin D |
200 |
IU |
| Vitamin E) |
15 |
IU |
| Vitamin K |
120 |
µg |