If RFK Jr. becomes health secretary, polio and mumps will "come roaring back," says Dr. Paul Offit.

New focus is on social media, especially Instagram, as "medical aesthetics" market gets younger.

Founder of nonprofit RxBalance Lydia Green says that "money and greed permeate the healthcare system."

The neurostimulating headband helps people fall asleep faster and sleep longer, according to Somnee's lab studies.

"We think of it as being Athletic Greens, but for your penis," said the co-founder of Joymode, the brand profiled in the most-read story.