Obesity treatment could be required by middle-aged people as it has been suggested that the problem is becoming more common among over-40s.
Dr Colin Waine, former chairman of the National Obesity Forum and visiting professor at the University of Sunderland, explained that there is a tendency to gain weight with age.
He explained: "Often the activity levels are slowing down but your eating habits don't change proportionally.
"You retain the eating habits that you had when you were much more active, in your younger days."
Obesity treatments could help to tackle the problem if it gets past the point where a simple change in diet could help.
Earlier this week, obesity expert Professor Klim McPherson from the University of Oxford told the Daily Mail that over-40s are not doing enough to control their weight.
Dr Waine added that money cannot be used as an excuse for following a poor diet. He noted that it is a "myth that healthy food is always more expensive".