Recent scientific research has shown that the foods that vegetarians used as a source of vitamin A (carrots, broccoli and sweet potatoes), in fact, has released only half the expected amount of carotenoids, the metabolic precursor of vitamin A.
On the other hand, reduce the recommended daily dose of vitamin A in men and 0.9 g / day and women 0.7 g / day. Dr.Russel Professor Taft (U.S.) universities, highlights all the vegetarians, that the neglect of the recommendations may affect the status of women in the eye and the risk of congenital defects in the fetus. It is also important to cover the increased need for increasing carotenoid intake of vegetables, because the effectiveness of the synthetic supplements is still very controversial.
Regarding iron, increased the recommended daily intake, and 8 mg / day for men and postmenopausal women and 18 mg for premenopausal women. Adequate iron intake should pay particular attention to pregnant women (during pregnancy, the recommended dose is 287 mg / day), that sufficient intake of iron, and often underestimate the risk of anemia. If necessary, you can also use iron supplements, the effect is demonstrated. Vegetarians can draw iron from cereals and vegetables, their income is usually much lower than from meat.