Background: Recent observational studies suggest that preformed vitamin A (VA) intakes of
1500–2000 μg/d may increase the risk of osteoporosis and hip fracture. However, few …

Background: If osteoporosis is linked with vitamin A (Vit A) A consumption, millions of people
could be affected. Methods: A MEDLINE search was performed with keywords retinol, β …

In recent studies from Sweden and the United States, a high vitamin A intake has been
associated with low bone mineral density (BMD) and increased fracture risk. In Sweden and …

Excessive intake of vitamin A is postulated to have a detrimental effect on bone by inducing
osteoporosis. This may lead to an increased risk of fracture, particularly in persons who are …

Background Excessive intakes of vitamin A have been shown to have adverse skeletal
effects in animals. High vitamin A intake may lead to an increased risk of fracture in humans …

Hypervitaminosis A is sometimes associated with abnormalities of calcium metabolism and
bone mineral status. A recent study found a negative association between reported dietary …

ContextIngestion of toxic amounts of vitamin A affects bone remodeling and can have
adverse skeletal effects in animals. The possibility has been raised that long-term high …

Results from observational studies of the association between vitamin A intake or serum
concentration and bone mineral density or fracture are mixed. The inconsistencies may be …

BACKGROUND: Recent studies on the association between vitamin A and fracture risk have
focused on samples with high vitamin A intake. We analyzed a cohort that was more …

There is debate about the possible deleterious effect of excessive vitamin A exposure on
fracture risk. In this nested case control study in older women (312 cases and 934 controls) …