A study warns … Obesity is responsible for many cases of cancer

In 2012, weight gain was responsible for 544,300 cancer cases diagnosed worldwide each year, while overweight and obese people had a proportion in the world, the researchers said in the journal The Cancer Journal for Clinicians. According to Reuters, only 1% of cancers in low-income countries account for 7-8% of cancers diagnosed in some Western high-income countries, the Middle East and North Africa.

"Many people do not know the relationship between weight gain and cancer," said Song Huawana, who headed the study group of the American Cancer Society in Atlanta.

She added in an e-mail:

"Trying to maintain and maintain a healthy weight is important and can reduce the risk of cancer."

The proportion of overweight and obese people has increased worldwide since the 1970s. In 2016, 40% of adults and 18% of school-aged children were overweight or obese between 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- and middle-income countries, who adopted a Western lifestyle with few or no children. 39, exercise 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.

More recently, some research has associated weight gain with prostate cancer, as well as cancer of the mouth and throat.