3 ms·

It really wasn't. Just lookup a graph of obesity over time and see if you can spot when the low fat diet was implemented by the U.S. government. Spoiler: https

• thaumasiotes 4y ago
  They're close. But the pyramid is not significant enough to account for that much change. Other things happened in 1980 too. (Also, your graph doesn't show obesity, and the pre-pyramid 45% rate would already be alarmingly high if it was obesity, which it isn't.)
  • irthomasthomas 4y ago
    It was alarmingly high and had been noted since the mid 1950s. That is why Ancel Keys, inventor of the lipid hypothesis and low fat diet, began researching the problem. They where responding to a heart disease and obesity epidemic. https://www.ncbi.nlm.nih.gov/books/NBK19623/figure/chartbook.f7/?report=objectonly https://www.ncbi.nlm.nih.gov/books/NBK19623/figure/chartbook...