A study of obesity surgery patients in Sweden has revealed that death rates after the procedure are low.
Researchers studied 14,768 cases of obesity surgery in Sweden between 1980 and 2005.
They found that just 0.2 per cent of patients died within 30 days of surgery; 0.3 per cent within 90 days of surgery; and 0.5 per cent within one year of the procedure.
Lead researcher Dr Richard Marsk, from Stockholm's Danderyd Hospital, told Reuters Health: "Most published series are from high-volume expert centres. We have shown that bariatric surgery can be performed with low mortality on a national level."
The findings, which are published in the Annals of Surgery, reveal that patients over the age of 50 are more likely to die following obesity surgery than younger patients.
In addition, men face a higher risk of death than women - a trend that Dr Marsk believes is partly due to men having more established heart disease by the time they go under the knife.
Meanwhile, a separate study in the journal Clinical Gastroenterology and Hepatology has found that obesity surgery can help to resolve obesity-related liver disease.