Well sure, but for a time there was also overwhelming medical evidence to support the fact that eggs were bad for you... and then that was retracted to say they were good for you. Then another study showed that alcohol was poison to the system, and then another study showed that one to two drinks a day actually lowered blood pressure and helped prevent heart disease. Now pregnant women aren't supposed to eat tuna, eggs, caffeine, and many other common food items which have been dietary staples for centuries. It boggles the mind that after generations, right now, all of a sudden these things are detrimental to health. Suprising that we aren't extinct yet.