The federal government has released new dietary guidelines, introducing an emphasis on consuming meat and dairy and avoiding highly processed foods.

In a first, scientists have extracted DNA from a Renaissance-era drawing attributed to Leonardo da Vinci, but they can't be sure that the genetic material belongs to the Italian polymath.

A new study reveals that nerve cells receive periodic infusions of mitochondria from neighboring cells — and this may point to a new way of treating nerve pain.

Federal health officials are attempting to make the U.S. childhood vaccine schedule more like that of Denmark. Experts say the decision lacks scientific backing.

C-reactive protein — a marker of inflammation — is as easily measured with blood work in a doctor’s office as cholesterol.