However, the cases that I do know of are the food pyramid recommending the vast majority of your caloric intake to be processed carbohydrates, lobotomy as a treatment for mental illness, and the case of David Reimer, who was raised as a girl following a botched circumsicion. Then there's thing like the missaligned incentives between sales reps and doctors leading to hundreds of thousands becoming addicted to OxyContin.
We act as though doctors and scientists are above some standard, and some even believe they follow a falsifiability principle, but there are cases - childbirth being one of them - where a common sense approach that tells you not to follow recommendations might actually be the right thing. It's a fine line, but we should have open conversations about the fallibility of science. Often, and in the comment that I was responding to, the implication is: science says it so it is correct. That's simply not the case.