The Claim
A single 11 mg intranasal dose of testosterone has no statistically significant effect on economic preferences—including risk-taking, fairness, altruism, or competitiveness—in healthy men aged 18–45.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
A single 11 mg nasal dose of testosterone does not change how healthy men aged 18–45 make decisions about risk, fairness, generosity, or competition.
See the scientific wording
A single 11 mg intranasal dose of testosterone does not cause measurable changes in economic preferences—including risk-taking, fairness, altruism, or competitiveness—in healthy men aged 18–45, as demonstrated by no statistically significant effects across nine pre-registered outcome measures in a double-blind, randomized controlled trial of 1,000 participants.
A single nasal dose of testosterone does not reach brain regions that control economic decisions, so the brain's processing of risk, fairness, altruism, and competition stays unchanged.
What the research says
1 studyScientists gave 1,000 men a nasal spray with testosterone and watched how they made money-related choices—like taking risks or sharing—and found no change at all. So, the spray didn’t make them act differently with money.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.