The effects of smoking OTOH are extremely clear.
I thought it was pretty clear that we do. Go talk to any physician and they will tell you the 3 things you control to increase your chances of a long & healthy life are:
1. Limit alcohol/tobacco 2. exercise frequently 3. eat a healthy diet
Are you suggesting for #3 they have no data to back that recommendation up?
~10 years ago they still thought eating fat made you fat, and recommended high carb diets.
Perhaps the 2021 recommendations are finally the correct ones. But how do I know that?
There is also a second issue, government agencies have been co-opted by industry to make recommendations not supported by the science. I'm specifically thinking about recommendations around fat&sugar, the same thing you called out that indicates the problem is not the science but rather regulatory capture.
Please don't misread, I agree with you in principle. I am simply pointing out there are nuances.
Thanks. Very succinct, and helps me frame my medical interactions a bit more clearly now.