The Unbelievable Strength of the Testosterone Myth

Key Points:

• The long-held belief that testosterone drives male aggression and risk-taking is increasingly challenged by scientific research, which shows no direct link between the hormone and such behaviors.
• Studies reveal that people’s aggressive actions are often influenced more by their beliefs about testosterone than by the hormone itself, with some evidence suggesting aggression may actually increase testosterone levels rather than the reverse.
• A comprehensive 2026 review of 52 studies involving 17,000 participants found no relationship between testosterone and risk-taking in either men or women, highlighting inconsistencies in earlier research methods.
• The myth of testosterone as the essence of masculinity originated in the late 19th century and was popularized through flawed early studies and media coverage, later reinforced by social media influencers and the testosterone supplement industry.
• Persisting because it supports traditional gender hierarchies, the testosterone myth frames male dominance in aggression and risk as biologically inevitable, despite mounting evidence that social and cultural factors play a critical role.