Obesity in teen boys may increase bowel cancer risk in later life "Teenage boys who become very obese may double their risk of getting bowel cancer by the time they are in their 50s," The Guardian reports. A Swedish study found a strong association between teenage obesity and bowel cancer risk in later adulthood.
The study involved over 230,000 Swedish males, who were conscripted into the military aged 16 to 20 years old. Those who were in the upper ranges of overweight and those who were obese at that time were about twice as likely to develop bowel cancer over the next 35 years as those who were a normal weight.
This study has a number of strengths, including its size, the fact that body mass index (BMI) was objectively measured by a nurse and that the national cancer registry in Sweden captures virtually all cancer diagnoses. However, it was not able to take into account the boys' diets or smoking habits – both of which affect bowel cancer risk.
The study involved over 230,000 Swedish males, who were conscripted into the military aged 16 to 20 years old. Those who were in the upper ranges of overweight and those who were obese at that time were about twice as likely to develop bowel cancer over the next 35 years as those who were a normal weight.
This study has a number of strengths, including its size, the fact that body mass index (BMI) was objectively measured by a nurse and that the national cancer registry in Sweden captures virtually all cancer diagnoses. However, it was not able to take into account the boys' diets or smoking habits – both of which affect bowel cancer risk.