A new analysis of existing research suggests that exposure to the heavy metal cadmium may increase the risk of pancreatic cancer. The meta-analysis, which combined data from multiple studies, found that people with higher cadmium exposure had a 69% greater risk of developing pancreatic cancer compared to those with lower exposure.
The analysis looked at different types of exposure, including occupational exposure on the job and biomarkers like cadmium levels in urine or blood. For occupational exposure specifically, the risk was 38% higher. The findings were consistent across different study designs, but the researchers caution that the results should be interpreted carefully.
One limitation is that the studies varied widely, which can affect the reliability of the combined results. Also, other factors like smoking or diet could have influenced the link between cadmium and cancer, a problem known as residual confounding. The analysis did not have enough data to show how the amount of exposure relates to risk.
While this study adds to evidence that cadmium may play a role in pancreatic cancer, it does not prove cause and effect. People concerned about cadmium exposure should talk to their doctor, but no specific medical advice is given here.
