One Week of Sleep Restriction Reduces Testosterone by 15% in Young Men
Does Sleep Restriction Lower Testosterone in Young Men?
Yes, and the decline is rapid and significant. This controlled study found that just one week of sleep restriction to 5 hours per night reduced daytime testosterone levels by 10-15% in healthy young men. The testosterone decline was equivalent to aging 10-15 years, demonstrating that sleep loss can rapidly age the male hormonal system. The research reveals that adequate sleep is essential for maintaining optimal testosterone production and male reproductive health.