Why do the CellSentials contain retinyl acetate?
Vitamin A has essential actions in areas of health that include vision, cellular differentiation, organ development during embryonic and fetal growth, and membrane structure and function. Several other complex physiological processes, including growth, reproduction, and immune system functions, also depend on vitamin A.
Recent research has indicated that some individuals have a limited ability to convert beta-carotene to vitamin A. Excess body weight reduces the efficiency of conversion, and there are genetic polymorphisms that decrease the ability to convert beta-carotene to vitamin A. Individuals may have different abilities to convert provitamin A carotenoids to vitamin A. These differences in conversion efficiency may be due to the genetic variability in β-carotene metabolism of individual human subjects. Therefore, provitamin A carotenoids might not be a good vitamin A source for those subjects of the poor converter phenotype.
USANA CellSentials use a combination of beta-carotene, retinyl acetate, and mixed carotenoids to provide vitamin A activity. A total daily dose results in 8600 IU from beta-carotene, 3000 IU from retinyl acetate, and 400 IU from mixed carotenoids. The combination of multiple sources of vitamin A better ensures that the CellSentials provide an advanced dose of vitamin A to everyone, regardless of genetic differences.
