This is another in a long line of medical reversals (salt, fat, sugar…). These cases raise a lot of good questions about the nature of scientific knowledge and its production. It also raises good questions about how scientific process can lead to conclusions that ultimately prove to be false.
The evidence is too weak to justify telling individuals to eat less beef and pork, according to new research. The findings “erode public trust,” critics said.
But on Monday, in a remarkable turnabout, an international collaboration of researchers produced a series of analyses concluding that the advice, a bedrock of almost all dietary guidelines, is not backed by good scientific evidence.