See undercover at a weight-loss clinic

Undercover footage shows a surgeon at a weight-loss clinic telling a reporter she could qualify for gastric sleeve surgery if she ate more.

Dr Ogün Erşen told the reporter to "eat some snacks" so she could increase her body mass index (BMI) to qualify for his weight-loss surgery.

The BBC reporter had a BMI of 24.4, which is within the healthy weight range. "You must eat, eat. Eat something and reach 30," Dr Ersen said.

The reporter gave the weight-loss clinic information which would have meant her BMI was 29 but she was not weighed and no medical checks were carried out during her consultation.

In a statement, Ekol Hospitals said: "We completely refute the suggestion that our hospital accepts patients for surgeries who do not meet international guidelines or criteria.

"Whilst at the hospital, a full and extensive health check is completed."

Dr Erşen denied he made the comments encouraging a patient to gain weight.

Watch the investigation Disclosure - Getting Thin Quick on the BBC iPlayer.