Too Much of a Good Thing: Excess vitamin A may hike bone-fracture rate

Dietary studies have suggested that people who consume large amounts of vitamin A in foods, multivitamins, or both are more likely to suffer hip fractures than are people who ingest modest amounts.

New evidence bolsters these findings. Researchers have now correlated men’s blood concentrations of vitamin A with a later incidence of broken bones–a comparison that avoids the vagaries that plague diet-recall studies.