Low testosterone, also known as hypogonadism, is a common condition among men, particularly as they age. The prevalence of low testosterone varies by age group and other factors.

Studies suggest that about 2-6% of men have clinically low testosterone levels. However, the prevalence increases with age. For example:

• Approximately 20% of men in their 60s,
• About 30% of men in their 70s,
• And nearly 50% of men in their 80s have low testosterone levels.

These figures can vary depending on the criteria used to define low testosterone and the populations being studied. It's also important to consider that many men with low testosterone levels may not show symptoms, and therefore, might not seek diagnosis or treatment. Regular check-ups with a healthcare provider can help in identifying and managing this condition effectively.