Sure, over 66% of Americans are overweight or obese. We've heard this CDC stat over and over again. I mention it in my presentations. 

However ... I ask: "What's the cause and what's the effect"?

My answer: The American diet is a catastrophe. We have a food crisis. It's the food that causes the obesity epidemic which causes the disease crisis that we have. Concentrate on food, not obesity. 

Kelly Brownell is the main force behind a soda tax ... because it causes obesity. He is well-respected and quoted in many articles about diet, health, lifestyle, obesity, and obesity-related public policy. 

I'm just wondering why he is morbidly obese? These pictures are of Brownell speaking at an obesity conference in Colorado. If he has a health issue that causes this, he should explain. I've never seen or heard an explanation.

As a health advocate, I do not believe I could sit through one of his speeches. Via speeches and my book, I dole out diet, health, and lifestyle advice. If I was overweight, in good faith, I would not provide any advice. I practice what I preach. After all, would you purchase a house from a builder who lived in an poorly built home? Not me.

By the way, he does conduct some very good interviews (podcasts) at the Yale Rudd Center website.

Here's a recent  interview with Kelly Brownell: