How would you approach trying to determine a good approach to healthy eating for most people then? Even breaking it down into 27 different groups requires an average of each particular group.
I'd expand that a bit - how can you find a good approach for anybody based solely off anecdotes?
Finding someone with a similar age, height, weight, race, ancestry, metabolism, activity level, sleep level, gut flora, etc. to take advice from would be nearly impossible.
A dozen "it worked for me" stories without any form of control is effectively useless.
Also throughout the thread you see people saying "that's what worked for me, everyone is different". The underlying point is to eat a diet that satisfies your hunger to the point you feel comfortable without consuming more calories than you need for your daily activities.
People with a sweet tooth may need to avoid high fat, high salt stuff. People who enjoy fat more may need to avoid carbs. People who enjoy exercise may just need to exercise a bit more, etc.
The science is just immature and not actionable for most people. Any anecdotal evidence and it's inverse can be backed by some study all of equal quality/lack of quality. The science just hasn't transcended the quality of anecdotes yet.
At least anecdotes represent something vaguely real.
>"How would you approach trying to determine a good approach to healthy eating for most people then?"
I wouldn't. As noted in my response to falcolas' response to you I would assume everyone can have different approaches to the same problem. Breaking it down to subgroups doesn't really help that you are still going to be studying an average person that doesn't exist.
