The Food Pyramid Was Too Coarse and Partly Captured (But Carbs Didn't Cause Everything)

Summary

The 1992 USDA Food Guide Pyramid genuinely was a **flawed, partly lobby-shaped** design — a grain-heavy base that didn't distinguish whole from refined grains — and it helped normalise a refined-carb, low-fat eating pattern; but the honest critique stops short of "carbs at the bottom caused the obesity epidemic," which is **monocausal**, mis-dates the policy (it began in 1977/1980, the pyramid only visualised it), and shouldn't be stretched to dismiss genuinely good guidance like folic-acid and iodine fortification.