Does every episode of "My 600-lb Life" leave you nodding your head as you watch how folks eat? It should, because like "Supersize vs Superskinny" these shows prove you are what you eat. It may get old to read about links between diet, obesity, and weight loss, but it's crucial all the same. It can't be overstated that obesity is at an epidemic stage and it's killing more folks faster than ever. Here are a few mythbusters on obesity and weight loss.

Weight gain is down to eating, not water

It's funny in a sad way how patients on "My 600-lb Life" excuse their weight gain. Christina put on 17 pounds in one month and told Dr. Younan Nowzaradan that it was just water weight.

She thought she could bluff a bariatric surgeon about her weight. But that's how in denial people are about weight gain. Dr. Now wasn't buying it and said in order to gain that much she'd have to down hundreds of gallons of liquid a day. The only liquid most of these folks on the show drink is soda pop. Saturated with sugar and salt, pop actually dehydrates. Yet sugar addiction makes folks literally crave junk food like pop.  

Weight loss is about diet, period 

A lot of folks think you can exercise weight off but you can't. Without changing what you eat, the best you can hope for is to swap fat for muscle. But to do that, you have to exercise about 10 times your regular routine and eat good protein, healthy carbs, whole grain, fiber, and veggies. And most people don't do that--they "treat" themselves after a workout with junk food.

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The only way to lose weight is with portion control and calorie counting (including recommended daily amounts of fat, protein, sodium, sugar and vitamins). You also have to break the refined sugar addiction. 

Most people eat 2-5x more than they realize

Invariably when gastric bypass doctors interview patients, they hear how people try to eat healthy and don't really eat that much. Then they are shown eating heaping plates of deep-fried food, fries, BBQ, pizza, pasta, cakes and pies washed down with soda. You see nay a vegetable and those you do are starchy corn, beans, and peas, and they admit to eating fast food 8-12 times a week. If you're eating fast food or in restaurants, you're getting double to triple the calories as in home-cooked food. Even frozen processed food has at least double the sugar, fat, calories and sodium that is recommended. One meatless alfredo meal can have 550 calories for a small serving that doesn't even fill you up. Anti-obesity awareness must target junk food, sugar, and fast food and educate on nutrition. Weight loss isn't easy, but it is a simple algorithm--less food, more good food than bad, and more calorie burn and you lose!