David Worsham, a heart attack survivor, was saved by the world’s smallest heart pump and the help of good Samaritans, and now ...

Cardiac arrest strikes suddenly, often without a warning. The very instant, the heart stops, and cuts off the blood flow to ...

Volcano Erupts in Russia's Kamchatka for First Time in Centuries; Quake May Be Linked Harvard liver specialist suggests ...

Health officials from Minnesota to Maine have issued alerts warning of poor air quality from wildfires burning in Canada.