My impression (from my wife who is in med school) is specific diet recommendations are very challenging to properly research and quantify for doctors. Sure we k

My impression (from my wife who is in med school) is specific diet recommendations are very challenging to properly research and quantify for doctors. Sure we know certain things behave certain ways and some things are objectively bad, but it can be hard to recommend a scientifically back diet. With the proper knowledge, it's relatively easy to identify diet deficiencies (e.g. low iron, calcium, or vitamin D levels) but it can be a lot harder to pinpoint excess as the body generally does a good job ridding itself of too much of something. Effects of diets can also take years and years to study. Look at Keto. Lots of people are claiming to see great results from it. I've tried it myself and have seen the positive effects. The problem is nobody knows what the long term effects of Keto will be. They look great in the short-term, like "curing" diabetes, but the long term results aren't so clear. There's a chance that a Keto diet (or any diet) could be placing significant unseen stress on the body.