Reply #2: Many people are taking excessive amounts of Vit A

[KurtNYC]

which can be lethal in doses over 100,000 iu. Even at the levels in many multi-vitamin tabs (5,000) it can cause headaches and other symptoms.

People would be far better off spending the same money of good food. At best vitamins are a flase sense of benefit, at worst deadly.

Several human studies have suggested an association between chronic high intakes of preformed vitamin A and bone loss potentially leading to osteoporosis. Studies of Arctic people, whose intake of preformed vitamin A is traditionally high, suggest that vitamin A does affect bone health. Furthermore, the incidence of osteoporosis appears to be highest in populations with adequate calcium and vitamin D intakes and where the intake of preformed vitamin A is the highest.

http://www.scenta.co.uk/health/features.cfm?cit_id=593557&FAArea1=customWidgets.content_view_1