Fat-soluble vitamins include vitamins A ... "Cell differentiation is what allows cells in the eyes to transfer images to the brain and cells in the intestines to absorb nutrients," says Reaver.

Most such vitamins are fat-soluble, and one's body absorbs them differently than water-soluble nutrients. Where water-soluble vitamins dissolve in water and are mostly eliminated in one's urine, ...

There are currently 13 recognized vitamins. Vitamins A, D, E, and K are fat-soluble. The body stores fat-soluble vitamins in fatty tissue and the liver, and reserves of these vitamins can stay in ...