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Obesity is the main cause behind over a half a million new cancer cases worldwide each year -with the problem being particularly serious in North America -a new report by the World Health Organization’s cancer research agency revealed.
This means that about 3.6% of all cancers worldwide and two-thirds of overweight-related cancers can be found in North America and Europe, WHO said.
The report, which was published in the medical journalLancet Oncology, gathered its information from 184 countries. CBS News reported:
“Among women, postmenopausal breast, endometrial and colon cancers accounted for nearly three-quarters (250,000 cases) of obesity-related cancers, while colon and kidney cancers accounted for more than two-thirds (nearly 90,000 cases) of obesity-related cancers in men.”
The WHO’s International Agency for Research on Cancer (IARC) added that high body mass index (BMI) – a person’s weight in kilograms divided by the square of their height in meters – has now become the main signifier of cancer risk. BMI has become the standard in determining whether someone is at a healthy body weight.
Scientists hypothesize that obesity and being overweight trigger cancer by changing insulin, glucose and hormone levels, and increasing chronic inflammation. This is believed to be more common and likely to occur in women’s bodies.