Smarten up this advert for the modern magazines, and l bet loads of women (and some men) would still buy crap like this. Times haven't changed that much.
Lose two to five pounds a week? Pah! Eat a bit less or do more exercise, it's pretty bleeding simple. Either make the effort or don't bother, but don't be wasting money on crap like this (or the modern day equivalent).
I bet Allan made a fortune.