What causes weight gain? Most people think it’s all calories in calories out, but that’s simplistic first order thinking. You must go deeper to the root causes of weight gain if you want to understand how to lose weight. Obesity spreads like a virus, an example of social contagion. By understanding the key role that societal norms and especially your friends play in weight gain, you can leverage this to your own advantage to lose that weight.
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By Jason Fung, MD
Jason Fung, M.D., is a Toronto-based nephrologist (kidney specialist) and a world leading expert in intermittent fasting and low-carb diets.
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