British researchers have confirmed that being overweight doubles
the risk of certain cancers in women.
Being overweight or obese accounts for one in 20 cancer cases
diagnosed in women in their 50s and early 60s each year,
researchers from Oxford University said in a study published
Wednesday in the British Medical Journal.
"We estimate that being overweight or obese accounts for
around6,000 out of a total 120,000 new cases of cancer each year
among middle-aged and older women in the UK," lead researcher of
the study Gillian Reeves said.
A woman walks past a
billboard in Mumbai April 19, 2007. India faces rising obesity
among middle class youngsters, even as the country continues to
battle widespread malnutrition and "shameful" infant and maternal
mortality. (Xinhua/Reuters File Photo)
According to the study, half of the 6,000 cases of endometrial
cancer (cancer of the womb) diagnosed in Britain each year are
caused by the patient being overweight or obese.
"Our research also shows that being overweight has a much bigger
impact on the risk of some cancers than others. Two thirds of the
additional 6,000 cancers each year due to being overweight or
obesity would be cancers of the womb or breast," she added.
Excess weight is also a major risk factor in one kind of
oesophageal cancer (cancer of the throat).
Obesity is also found to increase the risk of kidney cancer,
leukemia, multiple myeloma, pancreatic cancer, non-Hodgkin's
lymphoma, ovarian cancer and, in some age groups, breast and bowel
cancer, the study said.
The researchers have warned that the obesity epidemic is set to
worsen with over half of adults and a quarter of children predicted
to be overweight by 2050.
Increasing body mass index, a measure of body fat based on
height and weight, is associated with an increase in all cancers
combined and for 10 out of the 17 specific types of cancer
examined.
The risk of developing any cancer is almost tripled with a
10-point rise in body mass index, the study said.
As Britain's largest study on the link between weight and
malignant diseases, the study followed more than a million women
aging between 50 and 64 for five years.
(Xinhua News Agency November 8, 2007)
