New study sheds light on link between obesity and cancer

Radiographic imaging has been used by researchers at the US National Institute for Aging to help explain the link between obesity and cancer.

This study was the first to use the imaging technology to assess adipose tissue rather than estimates like body mass index (BMI) or waist circumference, focusing on the relationship between obesity and cancer risk in aging populations.

It was found that higher concentrations of adipose fat – particularly around the internal organs, where this is known as visceral fat – was associated with a particularly strong risk factor for many types of cancer, regardless of the individual's BMI.

Men with the most visceral fat had a nearly threefold increased risk of oesophageal, pancreatic, colon, kidney, thyroid and gallbladder cancer compared to men with little visceral fat.

Dr Rachel Murphy, lead author on the study, said: "These findings provide new insight into obesity and cancer in old age and suggest that interventions to target visceral adipose – in addition to promotion of healthy body weight – may impact future cancer risk."

The main role of adipose tissue is to store energy in the form of fat, although it also plays a part in cushioning and insulating the body.