keepingquiet
I used to watch this years ago but don't any more. It was pretty obvious to me that they get their money from the TV producers because without being able to get them to Dr Now's clinic there wouldn't be a programme.
I wouldn't watch it now because it is exploitative.
I also used to watch the programme some time ago - not regularly, just the odd case that came up on my FB feed.
I did feel a tad uncomfortable watching these women - and men - like you say, it is exploitative.
Their money obviously comes from their participation in the programme plus - I assume - welfare payments. But the indignities they have to suffer to make 'good' television is pretty awful.
One of the worst aspects is the obvious enabling of family members, many of whom are obese themselves. Oh, and the 'boyfriends' who lovingly fill up their plates with all the fried, greasy, calorie-laden food they can find in order to satisfy some perverted need of their own.
It's all a bit too much, I don't watch it anymore.