probiotics

When Melisa Martinez's son, Juelz, was born very prematurely at 25 weeks back in January, doctors at University of California, Davis Children's Hospital gave him probiotics. "They told me the probiotics may help reduce the risk of infection," Martinez says. Now, Juelz is home and doing well.

Editor's note, Jan. 17: Some identifying information has been removed from this report to guard the privacy of the family that is part of the probiotics test.

It's a typical hectic morning at Michele's house in Northern Virginia when she gets a knock on her front door.

Billie Iverson may be getting up there, but for an 86-year-old, she's still plenty active.

"I take trips, and I go do my own shopping, and I take myself to the doctor," Iverson says. "I do everything. I don't let anything stop me."

But one day, she got hit with something she'd never experienced — the worst case of the runs ever.

For days at a time, off and on for weeks, the problem kept coming back. Iverson eventually got so weak, she ended up in a nursing home.

"I just thought maybe I wasn't going to make it," she says. "I thought I was going to die."