2024-05-14 11:04:29
A new study found that 4 out of 10 cancer patients are caused by obesity.
According to a 40-year study of 4.1 million adults, obesity was found to be associated with more than 30 types of cancer. Until now, 13 types of cancer were known to be linked to being overweight, but now the number has increased to 32.
For every 5-point increase in body mass index (BMI, weight divided by height squared) (equivalent to about 3 kg for a healthy weight person), men’s odds of developing several relatively common cancers increase by 24% and women’s odds increase by 24%. It was found to increase by 12%.
For the same amount of weight gain, the risk of being associated with 19 different types of cancer increased by 17% for men and 13% for women.
According to the Korean Society of Obesity, △A body mass index of less than 18.5㎏/㎡ is underweight △18.5~22.9㎏/㎡ is normal △23~24.9㎏/㎡ is pre-obesity (overweight) △25~29.9㎏/㎡ is stage 1 obesity △ 30~34.9㎏/㎡ is stage 2 obesity, and over △35㎏/㎡ is stage 3 obesity (severe obesity).
Scientists believe that obesity may increase cancer risk through biological interactions such as chronic inflammation, metabolic changes, and changes in hormone levels.
This study, led by researchers at Lund University in Malmö, Sweden, followed the weight and lifestyle of 4.1 million adults for about 40 years.
During this period, approximately 332,500 cancer patients were identified, and in 40% of cases, a link between overweight and cancer was revealed.
The researchers looked at 122 types of cancer and their subtypes. As a result, it was confirmed that a total of 32 types of cancer are related to obesity. This is more than twice the number of 13 types of cancer (breast cancer, colon cancer, uterine cancer, kidney cancer, etc.) identified by the International Agency for Research on Cancer under the World Health Organization (WHO) in 2016.
Malignant melanoma, gastric tumor, small intestine and pituitary cancer, head and neck cancer, and vulvar and penile cancer were identified as among 19 potential cancers linked to obesity for the first time in the study.
“Our study suggests that the impact of obesity on cancer may be greater than previously known, given that obesity is a risk factor for more cancers, especially rare types,” said lead researcher Dr. Ming Son. said. Some of these have had little or no investigation in relation to obesity, he added.
The research results will be revealed at the ‘European Congress on Obesity’ held in Venice, Italy from the 12th to the 15th (local time).
Park Hae-sik, Donga.com reporter [email protected]
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2024-05-14 11:04:29