It started the way a lot of truck problems start: not with a dramatic breakdown, but with an annoying little vibe you can’t un-feel. At stoplights the engine would stumble, the RPM needle would wobble ...

The heart's ability to use oxygen efficiently is a critical indicator of its health, but tests to measure this function have ...

A new MRI method measures cardiac oxygen use in three minutes without catheters or radiation, offering a simpler way to study ...

Breaking free from nicotine isn’t easy, but with the right plan and support, you can take back control and breathe easier. Pictures of twins show how smoking dramatically speeds up wrinkles and aging.