Medically reviewed by Rafle Fernandez, MD Key Takeaways A fast heartbeat can be caused by emotions like stress or anxiety.Dehydration, or drinking caffeine or other stimulants, can make your heart ...

Dear Doctors: I wound up in the emergency room with a heart arrhythmia. It kept beating too fast, too slow and skipping beats ...

A team from the Research Institute of the McGill University Health Center (The Institute) have created a three-dimensional, beating heart-on-a-chip, or "mini-heart," using blood cells from a patient ...

Oh, my beating heart! One day, its image may be captured in 3-D by a high-speed microscope designed by German researchers. Scientists at the Max Planck Institute of Molecular Cell Biology and Genetics ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have created a tiny, beating piece of heart tissue from a patient's own blood cells, offering what researchers say ...

Cancer can occur anywhere in the human body, but it’s rarely found in the heart—a conundrum that has long stumped scientists. Now, a new study in mice may have figured out why: The mechanical force of ...

Trying to hold an ablation catheter steady against a papillary muscle inside a beating heart, one cardiologist told a group of Rice University students this summer, is like pressing against a blade of ...

Ray J is on the mend. The "Sexy Can I" singer opened up about his recent hospitalization for pneumonia, sharing an update on his current condition. "My heart's only beating 25 percent, but as long as ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have created a tiny, beating piece of heart tissue from a ...