Did you know that a few years ago, the legendary Dr. Albert M. Kligman (probably the most famous name in the history of dermatology) did a very careful study which examined the effects of sex hormones (both androgens and estrogens) on sebum production (citation available, on request)? He found that giving as much as 300 mg/day of methyl testosterone orally to healthy young men had no effect at all on their sebum production! Are you aware of that? That seems to debunk the popular notion that so many people have (among other myths) that eating sugary foods causes acne by increasing sebum production: sugar ---> more insulin ---> more androgens ---> more sebum ---> more acne. Maybe it also helps debunk the theory that eating sugar and other similar foods also causes hair loss!