Vitamin A Vitamin A supports vision, skin health, and immune function. In foods, it exists as retinol (animal sources) and beta-carotene (plant sources). A deficiency can lead to night blindness ...

Without vitamin K, you would lose too much blood even from a small cut or scrape. People on blood-thinning medications should talk to their doctor about vitamin K before increasing their consumption.

Vitamin A supports vision, skin health, and immune function. In foods, it exists as retinol (animal sources) and beta-carotene (plant sources). A deficiency can lead to night blindness and ...