There was a recent Swedish study that showed obesity surgery (OS) lowered the risk of cancer for all but colorectal cancer (CRC). The CRC shows up about 10 to 14 years after the surgery for the Swedes .Here's a link to a British study that , more or less, confirms their results.
In general, OS increases the risk of CRC and reduced the risk of breast cancer. The unexpected result is in bold.. if you were an obese Brit, you were more likely to have renal or endometrial cancer, regardless of surgery
[URL="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5865073/[/URL]"]www.ncbi.nlm.nih.gov/pmc/articles/PMC5865073/[/URL]
"4.1. Conclusions
In conclusion, using a population-based data linkage approach, we report increased CRC risk in individuals diagnosed as obese. Although the interpretation of whether OS is associated with subsequent higher CRC risk was limited by the small OS group size and restricted follow-up time after OS, the data indicated statistically significant increased SIRs in obese patients older than 50 years at the time of the surgery. This could be due to longer exposure to obesity before OS, something that requires further investigation. We also report that OS is associated with reduced breast cancer risk, unlike the obese comparator group. Finally, we report high SIRs for renal and endometrial cancers in the presence or absence of prior OS, which warrants further investigation."
In general, OS increases the risk of CRC and reduced the risk of breast cancer. The unexpected result is in bold.. if you were an obese Brit, you were more likely to have renal or endometrial cancer, regardless of surgery
[URL="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5865073/[/URL]"]www.ncbi.nlm.nih.gov/pmc/articles/PMC5865073/[/URL]
"4.1. Conclusions
In conclusion, using a population-based data linkage approach, we report increased CRC risk in individuals diagnosed as obese. Although the interpretation of whether OS is associated with subsequent higher CRC risk was limited by the small OS group size and restricted follow-up time after OS, the data indicated statistically significant increased SIRs in obese patients older than 50 years at the time of the surgery. This could be due to longer exposure to obesity before OS, something that requires further investigation. We also report that OS is associated with reduced breast cancer risk, unlike the obese comparator group. Finally, we report high SIRs for renal and endometrial cancers in the presence or absence of prior OS, which warrants further investigation."
