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Don't worry about any of that. Do this diet: no sugar, no grains. That's it. Eat as much of everything else as you want. Watch the pounds melt.

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That will definitely work, but there must be some other factor at play. There are plenty of populations in the world that consume a lot of grain but do not necessarily suffer from increased rates of obesity.

They probably have cultures of smaller portions, less processed food, and less added sugar (especially drinks). Example: compare the size of a Japanese mosburger with a burger & fries meal in the US:

http://www.thetraveltester.com/wp-content/uploads/mos-burger...

When you meet foreign travelers, ask them what they think about US serving sizes. Many of them find it shocking.

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