Puea.. High amounts of Vitamin A may cause baby birth defects.. Have a look at thins..
Some studies suggest that high doses of vitamin A may cause birth defects. A 1995 study found that women who took more than 10,000 IU (international units) of vitamin A daily (nearly four times the Institute of Medicines Recommended Dietary Allowance [RDA] of 2,565 IU for pregnant women) in the first two months of pregnancy had more than double the risk of having a baby with birth defects.6 Other studies have suggested that doses under 25,000 IU daily probably do not cause birth defects, but the lowest dose that may cause birth defects is unknown.7
The body is able to make its own vitamin A, when needed, from substances such as beta carotene, which is found in yellow and green vegetables. This raw material for the vitamin is considered completely safe and healthy during pregnancy. However, much of the vitamin A we consume is the preformed vitamin (retinol) which, in excessive amounts, may cause birth defects. Preformed vitamin A is found in many vitamin supplements and some foods, including meats, eggs, dairy products and fortified breakfast cereals.
Liver is the only food that provides very high amounts of vitamin A. The amount of vitamin A found in liver varies. According to the U.S. Department of Agriculture, a 3-ounce serving of beef liver may contain 30,000 IU; chicken liver, 14,000 IU; and canned chicken pate, 724 IU.8 A pregnant woman who eats liver regularly may consume enough vitamin A to pose a risk to her baby.
Though it is not proven that eating liver causes birth defects, the safest approach is for pregnant women to minimize their consumption of liver. A pregnant woman also should be sure that her multivitamin or prenatal supplement contains no more than 5,000 IU (international units) of preformed vitamin A (some prenatal vitamins contain no preformed vitamin A, substituting beta-carotene or omitting vitamin A entirely), and she should not take any vitamin A supplements beyond that amount.9