Mixed
The current evidence is inadequate to establish a causal role of arsenic in diabetes due to methodological limitations in epidemiologic studies and the use of non-physiological concentrations in experimental studies.
While high arsenic exposure is linked to higher diabetes rates in some regions, scientists cannot yet say for sure that arsenic causes diabetes. The existing studies have significant flaws, such as not measuring individual exposure accurately or using unrealistic doses in lab experiments. More research is needed to confirm a cause-and-effect relationship.
In summary, the current available evidence is inadequate to establish a causal role of arsenic in diabetes.
Why this rating
This is the overarching conclusion of a systematic review of 48 studies.
Source
Arsenic Exposure and Type 2 Diabetes: A Systematic Review of the Experimental and Epidemiologic Evidence
Ana Navas‐Acién et al. · Environmental Health Perspectives · 2005
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