The truth about Vitamin A
Originally Posted by aheartforhome
Is the amount of vitamin A in this safe. There seems to be an excess amout of beta carotene in it, but I'm assuming that's safer than the other type of Vitamin A.
I just looked this up. Apparently, this all originates from a NEJM study in 1995 that indicated that high levels of vitamin A, especially in early pregnancy, might correspond to birth defects.
Among the many problems of this study is the fact that it was retrospective. The fact that they were just looking at vitamin intake doesn't mean that that's the only important factor in whatever the pregnant women were consuming. In other words, (and yes, being stupid to make a point), they were all breathing, yet that wasn't considered as a possible link. Another issue with the study is just how much vitamin A is considered increasing the risks. The study examined levels of 30,000 IU of vitamin A. To put that into perspective, looking at the label off CLO which has vitamin A in it, one serving has 1000-2000 IU. Also according to the label I'm looking at, that is 20-40% DV. Also, vitamin A deficiencies are known to cause birth defects.
You need vitamin A. It's useful for cell formation and function, it's incredibly beneficial to immune system. It is necessary for cellular differentiation and organ development in the fetus. Pregnant women should limit their daily intake between 4000-8000 IU, according to this study.
Beta Carotene is not vitamin A. It is a precurser to vitamin A that the body can convert to vitamin A when needed. It is considered safe and not included in the above study. Most vitamins nowadays have the vitamin A in the form of beta carotene, so again, the above study doesn't apply.
I hope this helps!