Chapter

Fat-Soluble Vitamins

From Human Nutrition by Human Nutrition

Concepts

1. Vitamin

   "Vitamin A is a generic term for a group of similar compounds called retinoids. Retinol is the form of vitamin A found in animal-derived foods, and is converted in the body to the biologically active

2. Vision Immunity

   "The retinoids are aptly named as their most notable function is in the retina of the eye where they aid in vision, particularly in seeing under low-light conditions. This is why night blindness is th

3. Growth Cancer

   "Vitamin A acts similarly to some hormones in that it is able to change the amount of proteins in cells by interacting with DNA. This is the primary way that vitamin A affects growth and development.

4. Toxicity Sources

   "Vitamin A toxicity, or hypervitaminosis A, is rare. Typically it requires you to ingest ten times the RDA of preformed vitamin A in the form of supplements—it would be hard to consume such high level