Successful dieters might be healthier, but they're not happier.
That's what academics at University College London, who looked at nearly 2,000 dieters over four years, have concluded.
Their study, highlighted by the Scotsman, had 1,979 overweight or obese participants, 278 of whom lost at least five per cent of their body weight.
It found those who lost more than five per cent of their bodyweight were 52 per cent more likely to be depressed, despite improvements in their physical health. All participants were 50 or older and none had clinical depression or a debilitating illness.
Lead author Sarah Jackson said the study showed "people should not expect weight loss to instantly improve all aspects of life."
More: the study in PLOS One.