The Modern Testosterone Decline: What Every Midlife Man Should Know

Since the 1980s, studies have documented a consistent decline in average testosterone levels among men. One prominent study found that testosterone levels have been decreasing by about 1% per year, independent of aging. This means that a man in his 30s today may have significantly lower testosterone levels compared to a man of the same age in previous decades. [1]

While aging naturally leads to a gradual decrease in testosterone, the accelerated decline observed in recent decades suggests additional contributing factors.

Here are five of the key lifestyle and environmental influences: