The "doctor" who invented Kellog's corn flakes believed masturbation was the worst sin you could comit, it could cause cancer, and he did circumcission and advised caging genitals to keep boys from their "solitary vices." He ran an assylum (which is where he belonged tbh), and he had his patients eat plain corn flakes, believing they were healthy and could cure masturbation. It's no surprise he was a 7th Day Adventist.