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Obesity is responsible for 3.9% of cancer cases worldwide, according to a new report published in the Cancer Journal of CA Doctors.
He highlighted the link that exists between obesity and the risk of 13 cancers, including breast cancer, especially after menopause, liver cancer and prostate cancer.
According to the American Cancer Society, 2130 million new cancers and 13 million cancer deaths are expected by 2030 in the world.
"The future burden could be even greater because of the adoption of Western lifestyles based on smoking, malnutrition, physical inactivity and the reduction in the number of births, especially in developing countries. development, "say the researchers.
Read more: How to lose more than 10 pounds of weight in two weeks?
Global levels of obesity are rising, negatively affecting health, the report says.
The researchers studied data from the last four decades, from 1975 to 2016, said Hona Soong, one of the report's authors and scientist at the American Cancer Society.
During this period, weight gain went from 21% for men and 24% for women to nearly 40% for both sexes.
The largest increase in the overweight population of men in Western countries increased from 9% to 30%, and among women in Central Asia, the Middle East and North Africa, where rates rose from 12% to 12%. % to 35%.
"The simultaneous increase in body weight in almost all countries would be largely due to changes in the global food system, which encourages the consumption of energy-dense foods and nutrients, as well as the reduction of risks. of physical activity, "Song said.
According to the report, there is evidence that an excess of body fat is responsible for more than 13 cancer cases: menopause, colon / rectum, endometrium, gallbladder, kidney, liver, meningeal, multivitamin, ovary, pancreas, stomach (cardia) and thyroid gland. There is also possible evidence of a link between cancer of the mouth, pharynx and larynx.
Egypt, Mongolia and Puerto Rico, with 8.2%, 8% and 7.7%, respectively, have the highest cancer rates due to an increase in body fat. Among countries with 1% or less of India, Uganda and Malawi.
"The obesity epidemic needs to be tackled at the community level – it will not be resolved without environmental changes based on government policies," Song said.
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