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Dietary studies have suggested that people who consume large amounts of vitamin A in foods, multi vitamins, 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.
Taken together, the new work and the diet studies raise knotty questions about the maximum amount of vitamin A that a person can safely ingest each day, says study coauthor Karl Michasson, an orthopedic surgeon at University Hospital in Uppsala, Sweden. He and his colleagues report the new findings in Jan. 23 New England Journal of Medicine.
In the United States, the average daily intake of vitamin A through food, specially fish, eggs, and meat, is roughly 2,600 IU (international units) for men, and many multi-vitami
A. a man taking large amounts of vitamin A will suffer hip fractures.
B. the maximum of vitamin A a man takes every day should be within 3,000 IU.
C. the more a man consumes vitamin A every day, the higher chance he suffers hip fracture.
D. the less a man consumes vitamin A every day, the higher chance he stands of good health.
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