Video games do not appear to lower testosterone in any meaningful way. The research on this topic is surprisingly thin, but what exists points to a simple conclusion: playing video games, even competitively, does not reliably change testosterone levels. The real concern isn’t the games themselves but the lifestyle habits that sometimes come with heavy gaming, like poor sleep and inactivity.
What Happens to Testosterone During Gaming
Competitive activities in general can trigger short-term hormonal shifts. This is sometimes called the “winner-loser effect,” where winners get a temporary testosterone bump and losers see a dip. Researchers have tested whether this applies to video games, and the results are largely underwhelming.
A study published in Computers in Human Behavior measured salivary testosterone, cortisol, and other hormones in men playing League of Legends, one of the most popular competitive games in the world. The researchers expected to see testosterone increase during competition, with bigger spikes in winners. Instead, testosterone levels didn’t change at all, not in winners, not in losers, and not when playing against real opponents versus the computer. The hormonal response that reliably shows up in physical sports competitions simply didn’t materialize in a gaming context.
A separate study published in Hormones and Behavior did find some testosterone fluctuation during video game competition, but only under very specific circumstances. Among players who already had high baseline cortisol (a marker of stress), narrow wins actually decreased testosterone by about 9% compared to clear, decisive wins. Losing didn’t produce a consistent pattern either way. The overall takeaway from the study was that neither winning nor losing a video game reliably moves testosterone in one direction. The effects that did appear were small, short-lived, and depended on pre-existing stress levels rather than the gaming itself.
Why Gaming Feels Like It Should Affect Hormones
A popular theory online connects gaming to testosterone through dopamine. The logic goes something like this: video games flood the brain with dopamine, dopamine “burnout” disrupts the hormonal signaling chain, and testosterone production suffers as a result. It’s a tidy story, but it oversimplifies how these systems actually work.
Testosterone and dopamine do interact in the brain. Research in neuroscience has shown that testosterone can influence dopamine production and metabolism in certain brain regions, and dopamine signaling can affect the hormonal feedback loop that controls testosterone release. But these interactions are part of normal brain chemistry, not evidence that gaming creates a harmful cascade. The leap from “dopamine and testosterone are connected” to “playing video games tanks your testosterone” isn’t supported by the data. No study has demonstrated that the dopamine release from gaming is large enough or sustained enough to suppress testosterone production through the hormonal feedback system.
The Real Risk: Sleep Loss
Where gaming can genuinely affect testosterone is through sleep. Testosterone is primarily produced during sleep, with the largest pulses happening during deep sleep cycles. A well-known study from the University of Chicago found that restricting healthy young men to five hours of sleep per night for just one week reduced their daytime testosterone levels by 10 to 15 percent. That’s a significant drop, roughly equivalent to aging 10 to 15 years in terms of hormonal impact.
Late-night gaming is one of the most common ways people cut into their sleep. If you’re regularly staying up past midnight to finish one more match, you’re shortening your total sleep time and likely reducing the amount of deep sleep you get. Screen exposure before bed also suppresses melatonin, the hormone that signals your body to sleep, which can delay sleep onset even after you put the controller down. The blue light from screens is part of this, but the mental stimulation of competitive gaming also keeps the brain in an alert state that makes falling asleep harder.
So gaming doesn’t lower testosterone directly, but gaming habits that consistently cut sleep to six hours or less will. This isn’t unique to video games. Any activity that chronically disrupts sleep, whether it’s late-night work, binge-watching TV, or scrolling social media, carries the same hormonal cost.
Sedentary Time Matters More Than Screen Time
The other lifestyle factor worth considering is physical activity. Resistance training and regular exercise are among the most reliable natural ways to maintain healthy testosterone levels. Heavy gaming sessions that replace physical activity can contribute to a more sedentary lifestyle overall, and prolonged inactivity is associated with lower testosterone, higher body fat, and poorer metabolic health. Again, this isn’t a gaming-specific effect. It’s a sitting-too-much effect.
If you’re someone who games for a few hours a day but also exercises regularly, sleeps seven to eight hours, and maintains a reasonable body composition, there’s no evidence that gaming is doing anything to your testosterone. The hormonal concerns are really about the broader pattern: if gaming crowds out sleep and movement, those losses add up over time.
What Actually Lowers Testosterone
For context, the factors with the strongest evidence for reducing testosterone in men are:
- Chronic sleep deprivation: consistently sleeping fewer than six hours reduces testosterone significantly within days
- Obesity: excess body fat increases the conversion of testosterone to estrogen, creating a self-reinforcing cycle
- Chronic stress: sustained high cortisol levels directly suppress the hormonal chain that produces testosterone
- Alcohol use: regular heavy drinking impairs testicular function and disrupts hormone regulation
- Aging: testosterone naturally declines about 1 to 2 percent per year after age 30
Video games don’t belong on that list. The competitive hormonal response that people worry about is either nonexistent or too small and brief to matter. The lifestyle factors surrounding heavy gaming, particularly sleep loss and inactivity, are the actual variables to pay attention to.