Overweight before age 40 increases the cancer risk: study

Overweight before age 40 increases the cancer risk: study

PanARMENIAN.Net - In an international study, lead by the University of Bergen in Norway, the researchers wanted to find out how adult overweight (BMI over 25) and obesity (BMI over 30) increase the risk of different types of cancer, Science Daily reports.

The study showed that if you were overweight before age 40, the risk of developing cancer increases by:

70 percent for endometrial cancer.

58 percent for male renal-cell cancer.

29 percent for male colon cancer.

15 percent for all obesity-related cancers (both sexes).

"Obesity is an established risk factor for several cancers. In this study, we have focused on the degree, timing and duration of overweight and obesity in relation to cancer risk," says Professor Tone Bjørge, at Department of Global Public Health and Primary Care, University of Bergen.

Obesity increases risk over time

In the study, the researchers included adults with two or more measurements, obtained at least three years apart, and before a possible cancer diagnosis. On average, the individuals were followed for about 18 years.

Obese participants (BMI over 30) at the first and second health examination had the highest risk of developing obesity-related cancer, compared to participants with normal BMI.

"The risk increased by 64 percent for male participants and 48 percent for females," Bjørge says.

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