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

Retinol is involved in bone remodeling, and excessive intake has been linked to bone
demineralization, yet its role in osteoporosis has received little evaluation. We studied the …

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 …

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 …

Studies of hypervitaminosis A in animals and anecdotal reports of accidental vitamin A
poisoning in humans suggest impairment of bone remodeling and increased numbers of …

Two hundred eighty-four female adults (aged 40-70 years) were longitudinally studied to
investigate the relationship between dietary supplemental vitamin A and serum biochemical …

Previous research suggests that Hispanics in this country may have poor vitamin A status.
Using serum retinol data from the Hispanic Health and Nutrition Examination Survey, we …

We studied the relationships of supplemental and total vitamin A and supplemental vitamin
E intake with fasting plasma biochemical indicators of vitamin A and vitamin E nutritional …

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) …

Background: Serum retinyl ester concentrations are elevated in hypervitaminosis A. It was
suggested that retinyl esters> 10% of total serum vitamin A indicate potential …