How a bunch of rich, fat politicians getting sick started a horrible dieting trend. Low fat started out as a good idea back in the 70's and 80's to lower heart attacks (heart disease in general) which at the time seemed to be caused by eating a lot of fat. A lot of attention was drawn to this by politicians increasingly dying from various heart diseases. The recommendations came from government healthy eating guides. The logic was simple the less fat people ate the healthier they will be. The food industry went nuts (but not using nuts of course, they have fat) creating whole new classes of products and variations on existing products that were fat-free, low fat and cholesterol free. So the mantra was less fat, more carbs. Something interesting that happened at the same time was that people became fatter with obesity and diabetes starting to rise at an alarming rate. So the objective of healthier living through low fat actually had the opposite effect of increasing obesity which increases the risk of, wait for it, heart disease.