That's because Pills = $$$ to pharma companies.
Low fat foods = $$$ to food companies
Eating less, and exercising more, generally is not in anyone's commercialinterest, unless you have a gym/fitness club membership.
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As an aside, the recently re-uncovered works on Alternate Day Fasting (also known as intermittent Fasting)makes compelling reading. Unfortunately for Global Corporations, it makes them no money so is ignored/often rubbished.
http://www.bbc.co.uk/news/health-19112549