Pregnant women with an insufficient intake of folic acid are more likely to give birth prematurely or to deliver babies with low birth weight or with birth defects. Riboflavin, also known as vitamin B2, functions as part of metabolic systems concerned with the oxidation of carbohydrates and amino acids, the constituents of proteins. Vitamin B2 is found in foods such as milk, eggs, leafy vegetables, kidney, and liver. An adult needs between 1.2 and 1.7 mg of the vitamin daily. Thiamin can be found in cereal grains and in some seeds.
Pork is a rich source of the vitamin.
The recommended daily intake of thiamin is 1.0 to 1.1 mg for adult women and 1.2 to 1.4 mg for adult men. Vitamin B6 or pyridoxine helps to break down amino acids, the building blocks of protein. No human disease has been found to be caused by a deficiency of vitamin B6 in the diet, but some obscure human ailments respond to its administration. An adult needs from 2.0 to 2.2 mg of vitamin B6 each day. Vitamin B6 is found in cereal grains, meats, nuts, and some fruits and vegetables.