Essential amino acids: What are they? 9 of them.

Essential amino acids

Essential amino acids cannot be made by the body. As a result, they must come from food.

The nine essential amino acids are: 

histidine, 

isoleucine, 

leucine, 

lysine, 

methionine, 

phenylalanine, 

threonine, 

tryptophan,

valine.