In a number of economically developed nations the intelligence of the population has
increased by approx. 1 standard deviation (SD) over the last half century. No satisfactory …

Mean and median dietary intakes of vitamin A in the US are approximately 1000 and 624
retinol equivalents, respectively. In this paper a satisfactory vitamin A status is defined as a …

Publisher Summary This chapter examines the vitamin A metabolism and requirements in
the human studied with the use of labeled retinol. Deficiency of vitamin A is a major …

I welcome the privilege of writing some words of introduction to this important book. Its
authors have been courageous in bringing together in one text a triad of topics that cover …

Dietary lipids have been shown to increase bioavailability of provitamin A carotenoids from a
single meal, but the effects of dietary lipids on conversion to vitamin A during absorption are …

The first source to collect the latest evidence linking carotenoids to human health and
disease, this stimulating reference studies the role of carotenoids in the prevention of …

and birds required for both night vision and eye health. In the first quarter of this century that
substance was isolated as a fat-soluble material distinct from the fatsoluble antirachitic …

Dietary restriction (DR) is the most powerful intervention to enhance health and lifespan
across species. However, recent findings indicate that DR started in late life has limited …

Retinoids have and will continue to revolutionize dermatologic therapy in a manner
analogous to the development of topical corticosteroids. Isotretinoin, for example, has made …

To assess the age-dependent vitamin A status of children, liver samples taken at autopsy
from 170 American children 0–15 yr of age were analyzed for vitamin A and carotenoids …