The Study
Genome-wide association studies identify 77 loci for suicidality and provide novel biological insights
This study looks at DNA from hundreds of thousands of people to find tiny genetic differences that are more common in people who have thought about or attempted suicide. It can't prove those genes cause suicide, but it shows they're linked — like noticing that people who wear red shoes are more likely to like apples, but not saying red shoes make you like apples.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
Scientists looked at the DNA of hundreds of thousands of people to find genes linked to suicidal thoughts and actions. They found many genes involved, especially in brain areas that control emotions and memory.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 548 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1While genes play a measurable role, most of the risk for suicide comes from non-genetic factors like environment and life experiences.
- 2However, the genetic clues help scientists understand the biology behind suicide risk.
- 377 gene spots were linked to suicide risk; 59 were new.
- 4Genes explain about 6.7% of the risk.
- 5People with the highest genetic risk scores are 1.43 times more likely to attempt suicide.
- 6Suicidal thoughts and actions share 88% of genetic risk but are not identical.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Related Content
Claims (5)
Some of the genes linked to suicide seem to affect brain areas that handle emotions, memories, and rewards—like the amygdala and hippocampus—suggesting that when these brain circuits don’t work right, it might raise the risk of suicide.
Scientists found 77 spots in our DNA linked to thoughts or actions about suicide — 59 of which are brand new discoveries — showing that genetics play a complex role in different ways people experience suicidal thoughts or behaviors.
Genes play a small but real role in why some people might be at higher risk for suicide attempts or death by suicide, with about 6.7% of that risk linked to common genetic differences.
Suicidal thoughts and actions are closely linked in our genes, but not completely — meaning while they share a lot of genetic risk, there are also different biological reasons why some people go from thinking about suicide to acting on it.
A genetic score that adds up many small risks can slightly predict who might be more likely to experience suicidal behavior — people with the highest scores are about 1.4 times more likely than average to be affected, though it only explains a tiny part of the overall risk.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.