Signs are generally supposed to be dull, simple and easy to read. So when one’s contents inspire dread instead of clarity, it’s either worked too well or someone really just overdid it. We’ve gathered some of the creepiest signs netizens have seen and shared online.

“Lack of blood flow to the heart muscle,” Weaver said. “Our heart is an active muscle that is moving all the time and it needs oxygen. And so when that muscle doesn’t get oxygen, it starts to die.” Doctors say many people ignore symptoms because they feel strong or don’t recognize the warning signs.

Optum Cardiologist Dr. Sujata Agnani discusses top risk factors, and the red flags that deserve attention. Sponsored by Optum Care.

Human trafficking and interpersonal violence experts say knowing the warning signs of these crimes can help those in critical need and potentially save lives.

Dave Coulier entered complete remission after battling two cancers in 18 months. The "Full House" star credits early detection with saving his life.

After six skiers were rescued from the “horrific” aftermath of an avalanche near California’s Lake Tahoe, the family members of nine remaining skiers received crushing news. The bodies of eight had been left on the icy mountainside,