A new study from Northwest China looked at 451 middle-aged and older adults to see if heavy metals in the blood are linked to liver health. Researchers measured levels of several heavy metals, including cadmium, and checked liver function through blood tests.
The study found that higher blood cadmium levels were linked to higher levels of certain liver enzymes (GGT, TBA, ALT, AST) and lower levels of bilirubin. When looking at the combined effect of multiple heavy metals, the pattern was similar. In animal tests, cadmium exposure caused liver damage and raised enzyme levels.
This is a cross-sectional study, meaning it shows a link but cannot prove that heavy metals caused the liver changes. The study was also relatively small and only looked at one region in China. More research is needed to confirm these findings and understand the long-term effects.
For now, the results suggest that exposure to heavy metals like cadmium may affect liver function in older adults. However, this is early evidence and should not cause alarm. If you are concerned about heavy metal exposure, talk to your doctor.