For the first time, scientists observed a primate in the wild treating a wound with a plant that has medicinal properties.

But the scope of the outbreak among cattle remains uncertain, and little human testing has been done.

The outbreak linked to shelled organic walnuts distributed by Gibson Farms has sickened 12 people and hospitalized seven in California and Washington State, federal officials said.

A data analytics firm has helped big health insurers cut payments to doctors, raising concerns about possible price fixing.

Several lawmakers questioned whether the company had become so large — with tentacles in every aspect of the nation’s medical care — that the effects of the hack were outsize.

Women at risk for extreme high blood pressure should take a daily baby aspirin. But their doctors don’t always tell them.