From the outside, Bill McGahan looked like he lived a pretty good life.
He had a great marriage, four beautiful children and a great job in real estate. But the truth of the matter was he felt horrible.
McGahan, who was in his mid-40s, was overweight at 225 pounds. He could barely fit into his clothes; he snored loudly and didn't have the energy to play with his then 12-year-old daughter and 8-year-old triplets.
Bad eating habits, alcohol and a sedentary lifestyle had caught up with McGahan, who said he began to realize he could no longer eat the way he used to in college.
"I was on the see-food diet: What you see is what you eat," said McGahan. "Tons of carbs, pasta, pizza, steak, fries ... all the good stuff." 
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Matt Sloane contributed to this report.
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