“the number one factor is whether you eat more calories you burn off with your metabolism and activity level.”
All things equal, sure.
The microbiome of individuals is not equal in species of bacteria nor concentration of population of species.
Apparently, some obese people have bacteria that increase obesity,
A fascinating area of study
Apparently, some obese people have bacteria that increase obesity,
A fascinating area of study
I agree with all of those statements. People with abnormal body weights should not be used as poop donors. But I do not believe that studies support persistent or permanent weight gain. If a study has found this... I would like to see it.