I know someone who lost 5.5 stones on LL. She was told to lose weight to have an op and that's how she chose to do it.
After the op she put back all the weight PLUS an extra 2 stones in a very short period of time.
This has inspired me to do some diet maths.
To gain one pound you have to eat 3500 calories more than your body needs.
So, to gain 7 stone 5lbs ( which is 103lbs), she would have had to consume 306,500 calories more than her body needed.
That is a hell of a lot of food to eat on top of a basic 2000 calories a day. Particulalry when you think that 306,500 calories is almost half a years worth of food to someone eating 2000 cals a day.
Did she have time to do anything other than eat?