Claim: Left-handed people die younger than right-handed people

The claim that left-handed people die younger than right-handed people is mostly false. Research from various studies indicates that the supposed lifespan gap is largely an artifact of historical reporting and demographic changes, rather than a true biological difference. While some older studies suggested a significant difference, more recent analyses have shown that when accounting for cohort effects, the difference in lifespan is minimal, around 0.43 years. This perspective is supported by mainstream research findings, while some older studies continue to be cited as evidence against this view, leading to confusion about the claim's validity. The models diverge sharply — treat this as higher-uncertainty. Gemini comes in highest (50%), while Perplexity is lowest (18%). Perplexity expresses higher confidence than Gemini on this claim. While some studies, particularly older ones, suggest that left-handed individuals may have shorter lifespans, these findings are increasingly viewed as unreliable. For instance, an archival study of cricket players reported a significant difference, but this has been challenged by more recent analyses that attribute the gap to factors like accidental deaths. Thus, while there is some evidence that could support the claim, it is overshadowed by more comprehensive studies that indicate the lifespan difference is negligible when properly analyzed. This discrepancy does not fundamentally alter the overall verdict of mostly false, but it highlights the complexity of the issue.