started panicking that the risks were getting out of control. They were actually a tiny fraction of what they are now. Obesity was very rare at the time.
They had hearings and George McGovern's committee was in charge. One of his aids was a vegetarian. They decided on the food pyramid as the ~"cure for the problem".
I saw an old clip of some hearings they had with some top scientists and doctors at Washington University about it. The film was in black and white. One of the doctors expressed the sentiment of the others when he exasperatedly stated that there was no evidence for what they wanted to do.
The reply was that, well, "We need to do something." so they instituted the food pyramid.
As one cynic later noted decades later... Despite everyone switching from butter to margarine, whole milk to skim milk, & generally cutting fat out of their diets, drastically increasing the fruits and grains consumed by the average American and people jogging along the sidewalks of America in their underwear, an obesity epidemic took off, as did the incidence of diabetes, heart attacks and strokes. Cancers went up as well.
It was no coincidence.
Read a couple of books by science writer, Gary Taubes:
Good Calories, Bad Calories: Fats, Carbs, and the Controversial Science of Diet and Health
https://www.amazon.com/Good-Calories-Bad-Controversial-Science/dp/1400033462
or his more accessible one:
Why We Get Fat: And What to Do About It
https://www.goodreads.com/book/show/8727466-why-we-get-fat