Bone broth, fish, and poultry are all collagen-rich foods. Vegetarians have plenty of protein sources to choose from too.

People are injecting peptides to build muscle, trim fat, and reduce inflammation. Does it work?

Proteins are life's molecular workhorses, doing everything from turning sunlight into food to fighting viruses. They are ...

Proteins, composed of essential and non-essential amino acids, are vital for building tissues, immune function, and muscle ...

Protein gives you energy thanks to amino acids. Learn why researchers want to reassess daily protein recommendations and what ...

In TODAY.com's Expert Tip of the Day, a dietitian explains which fruit can help people meet their daily protein goals.

Background and aims Metabolic-associated steatohepatitis (MASH) is an advanced and progressive liver disease that potentially causes cirrhosis and hepatocellular carcinoma. Exercise is a crucial and ...

Molecules from the 20-million-year-old teeth of a rhino relative are among the oldest ever sequenced, opening tantalizing ...

Scientists found that adult stem cells intended to maintain hair growth are sometimes redirected to healing skin instead and the amino acid serine, found in common foods, regulates this process. The ...

Amino acid supplements can help assist muscle growth, hormone production, and brain health. Some of our favorite brands are Thorne, Momentous, and BodyHealth.

By genetically modifying mice to not produce the amino acid cysteine, and feeding them a cysteine-free diet, rapid weight loss was achieved.