Hippocrates, a philosopher who lived from 460 to 359 BC is often quoted as saying,“Let your
food be thy medicine and your medicine be thy food.” Having lived just shy of a century at a …

Vitamin A is essential for the formation and maintenance of many body tissues. It is also
important for embryonic growth and development and can act as a teratogen at critical …

Objective: To examine adverse effects, adverse events, and potential interactions of vitamins
in light of their current prevalence of use, and to discuss whether vitamins should be …

It has been shown that high vitamin A intake is associated with bone fragility and fractures in
both animals and humans. However, the mechanism by which vitamin A affects bones is …

Objective To study fracture risk associated with use of systemic vitamin A analogue
(isotretinoin and acitretin) treatment. Design Case-control study. Setting Nationwide registry …

OBJECTIVES: Association between vitamin D deficiency and excess of vitamin A as a
potential risk factor of osteoporosis and fracture has been evaluated. DESIGN AND …

The potential adverse effects associated with some of the more common oral vitamin
supplements—vitamins A, D, and E and niacin (forms include nicotinic acid and …

Fruits and vegetables are rich sources of provitamin A carotenoids. We evaluated the
vitamin A (VA) bioefficacy of a whole foods supplement (WFS) and its constituent green …

The elderly population is at risk for polypharmacy and, therefore, also at risk for drug-
induced osteoporosis (DIOP). Epidemiologic studies provide valuable information about …

Publisher Summary Vitamin A is an essential nutrient for the promotion of general growth,
maintenance of visual function, and regulation of the differentiation of epithelial tissues and …