Peter Wenner, a Los Angeles real estate developer, weighed 335 pounds when he underwent gastric bypass surgery two years ago. He has shed 120 pounds, which he’s delighted with, but he recounts with horror those first six weeks after surgery.

“I spent time every day on the toilet, either vomiting or doubled-over with diarrhea,” says the 46-year-old father of four teenage boys. “I never knew how different foods were going to affect me.”

When searching for a great restaurant recommendation, who hasn’t heard someone say, “Let’s check Zagat.”

Now, the Zagats have a great health recommendation, too. Tim Zagat, who with his wife Nina founded their world famous restaurant guide series 25 years ago, came to the Pritikin Longevity Center in August and left feeling a whole lot better – and lighter.

In two weeks, Mr. Zagat shed 15 to 20 pounds, “and I was really delighted about my blood values. I came to Pritikin with elevated blood sugar, and I left with normal blood sugar. My cholesterol dropped down to normal levels as well. There’s no question that these changes were directly attributable to my stay at Pritikin.”