It can be difficult to tell how much protein a food contains just by looking at it. But these photos can help make sure your ...

Protein indirectly contributes to your daily energy levels. However, the body typically relies on carbohydrates as its primary energy source. Learn how protein helps with energy here.

When resources such as amino acids or the cell's capacity to build proteins fluctuate—e.g., after eating, during stress, or in the presence of certain drugs—this balance can shift. And yet, cells ...