Nutrition Facts Guide: Superfoods, Lipids & Healthy Oils

Nutrition facts for superfoods like acerola cherry and ginger juice reveal hidden health benefits. Learn about the three types of lipids, the difference between cider and distilled vinegar, and the best vitamins for vibrant skin.

High angle view of various types of sushi rolls

Natural Sources of Methionine

Published Jul,08 2011 | By Don Amerman

Methionine is an essential amino acid, which means that your body must have it to function normally but cannot synthesize it on its own. Methionine is a sulfur-containing amino acid, closely related to cysteine, and both are building blocks of protein, as are most amino acids.