Just saw a video from 1982, noticed how much thinner people were. Remarkable increase in fatness across the board in just 34 years.
2. Food variety has increased, and people eat more when their diets are less monotonous.
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Basic idea is food is more appealing (competitive pressures help this along) -> people eat more
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Obviously this is a complex issue and I know these theories would only explain some of the change.
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There's two big facts - the time series increase, and the poor being fatter than the rich. Hard to find a theory that fits both.
End of conversation
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