Avoiding sugar and fat is evidence-based, but wayyy too broadly applied. Depends on the person, the condition, and the rest of the diet. Some people who shouldn't be eating broccoli are... some people who should be eating fats are avoiding them... some people who should be eating sucrose are avoiding it because they think it's the same as taking in glucose and fructose independently. Lots of people replaced butter with margarine, which was worse.

Another comment claims: "I recall andrej walking around the office at this time (tesla), bad-mouthing all the sugar products that came into his view, claiming they are weaponized; and very pleased if he saw any nuts." [1]

This advice would actually kill me fairly quickly if I didn't know any better.

The internet is full of prescriptions without qualifiers, and desperate people, (feeling very ill without answers from their doctors, or no access), willing to believe whatever opinions they find because it fits their current perspective without deviating too much. It might be better to just give people the tools they need to understand what's happening [2], and let them listen to their own symptoms to make changes, if they're willing and capable...

[1] https://news.ycombinator.com/item?id=38110001

[2] https://www.roche.com/about/philanthropy/science-education/b...