We're talking about Ed Snider, chairman of Comcast-Spectacor. And, believe it or not, all the foods were making him sick. He dealt with digestive problems and pain for nearly 30 years before getting the right diagnosis.

He's no stranger to the media spotlight. But this time, Ed Snider agreed to sit down and talk about something very personal... years of stomach trouble that no medication seemed to help.

Ed Snider/COMCAST-SPECTACOR CHAIRMAN:

"Finally, I stopped taking them. They said, you know, it's probably nerves. But I'm not the nervous type."

"I have had it since I was a young man. But I didn't know it."

Usually, there are symptoms like chronic diarrhea, abdominal pain, or bloating, as the gluten destroys the small intestine. You could see a normal intestinal lining, and one damaged by Celiac Disease.

"It's poison to almost 3 million Americans, but most of them don't know they have the disease."

Alice Bast/Celiac Patient:

"I thought I was dying. My hair was falling out, my teeth were breaking. I had a full-term stillborn child."

People may also have unexplained skin rashes and joint pain, conditions few doctors connect to Celiac Disease.

Ed Snider: "I think those people, if they haven't had any success with medication or anything else, should be checked. Because I think it's misdiagnosed."

Dr. Anthony DiMarino/JEFFERSON UNIVERSITY HOSPITAL:

"It's easily diagnosed by certain blood tests initially, and then a sampling of the small intestine taken through an endoscope."

Emily Rubin, R.D./JEFFERSON UNIVERSITY HOSPITAL:

"Once you take the gluten out, you are perfectly fine."

Who would guess that bacon bits or chicken broth are processed with starches made from wheat? If people with Celiac stick to a gluten-free eating plan, the digestive system can heal in 3 to six months. And a lifetime of discomfort can disappear.

Snider: "This is almost two years, I haven't had one stomach problem since! I am 71 years old. I am bigger and stronger than when I was at 30."