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The researchers said in a newspaper "CA: eCancer Journal Forclinicans" In 2012, weight gain was responsible for 544,300 cases Cancer He has been diagnosed every year around the world.
While these people suffer from weight gain Obesity is only one percent Cancer cases In low-income countries, they accounted for 7-8% of cancer cases diagnosed in some Western high-income countries, the Middle East and North Africa.
Huawana Song, who led the study group, said Cancer Society In Atlanta "Many people do not know the link between weight gain and cancer".
She added "Trying to maintain a healthy weight and maintain it is important and can reduce Cancer risk".
The researchers revealed that the proportion of overweight peopleL & # 39; obesity Has grown all over the world since the 1970s.
In 2016, 40% of adults and 18% of children of school age were overweight or obese L & # 39; obesity Of 2 billion adults and 340 million children worldwide.
The researchers said that, while the proportion of overweight people in most countries and among all population groups, this increase was more pronounced in some low-income and middle-income countries with a Western lifestyle with few HIV infections. 39, exercise and a lot Unhealthy foods.
Song said, "The simultaneous increase in weight gain in almost all countries is largely due to changes in the global diet focused on energy-rich foods and nutritional value, as well as reduced opportunities of physical activity. "
Overweight and obesity are closely related to an increased risk of infection of about 13 species Oncology Breast, colon, rectum, uterus, esophagus, gallbladder, kidneys, liver, ovaries, pancreas, stomach, thyroid, brain, spinal cord and blood cells.
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In 2012, weight gain was responsible for 544,300 cancer cases diagnosed worldwide each year, researchers said in The Cancer Journal.
While overweight and obese people accounted for only 1% of cancers in low-income countries, they accounted for 7-8% of cancers diagnosed in some Western high-income countries, as well as in the Middle East and the Middle East. North Africa.
"Many people do not know the connection between weight gain and cancer," said Huwana Song, who was leading the study group of the American Cancer Society in Atlanta.
"Trying to maintain and maintain a healthy weight is important and can reduce the risk of cancer."
The researchers found that the proportion of overweight and obese people had increased worldwide since the seventies.
In 2016, 40% of adults and 18% of school-aged children were overweight or obese on 2 billion adults and 340 million children worldwide.
The researchers said that while the proportion of overweight people in most countries and in all population groups, this increase was more pronounced in some low- and middle-income countries with a Western lifestyle with little activity. physical and many unhealthy foods.
"The simultaneous increase in weight gain in almost all countries would be largely due to global diet shifts focused on energy-rich foods and nutritional value, as well as the reduction of the opportunities available to them." Physical activity, "said Song.
Overweight and obesity are closely related to an increased risk of 13 types of tumors: breast, colon, rectum, uterus, esophagus, gallbladder, kidneys, liver, ovaries, pancreas, stomach, thyroid , brain, spinal cord and blood cells.
