One more reason not to take Vitamin A, from Vitamin A Supplements May Hurt Bones:
Taking vitamin A supplements can weaken the bones and increase the risk of fractures up to seven times, according to a large Swedish study.The research, conducted on men, confirms three earlier studies in women showing that high intake of vitamin A raises the risk of broken hips and weak bones. The latest study is the first to measure levels of the vitamin in blood, rather than just asking about diet and supplement use.