A "prediabetes" diagnosis doesn't help identify older adults at risk for full-blown diabetes. "Doctors instead should focus on healthy lifestyle changes..."

Walter Willett, professor of epidemiology and nutrition at the T.H. Chan School of Public Health, takes a closer look at a diet that is as healthy for you as it is the planet,

Loss of muscle mass is a growing concern for the tens of millions of older Americans. It leads to falls and increased isolation, already a huge problem during coronavirus.

Harvard Chan School professor Eric Rimm looks at the updated U.S. dietary guidelines — what’s changed and what should change.

Foods like nuts, avocados, and olive oil are rich in a fatty acid called oleic acid. New research suggests it could help some multiple sclerosis patients.

Anti-nutrients naturally occur in food and can block the amount of other nutrients available for your body to use. But their effects aren't all bad, which is why they're undergoing an image makeover.

A large-scale international study uses metagenomics and blood analysis to uncover gut microbes associated with the risks for common illnesses such as diabetes, obesity, and heart disease.

Black bears have far simpler gut microbiomes than researchers expected to find, a new study reveals. Diet and environment may be key to their gut bacteria.