Understanding male health

How testosterone declines with age

Testosterone declines gradually with age, starting at around 40 years old and at a rate of approximately 1% to 2% per year.
Revised on
July 16, 2026
Blue twisted rope isolated representing testicular torsion

Testicular torsion and male fertility

Testicular torsion twists the spermatic cord, potentially affecting fertility—learn about its impacts and treatment options.
Revised on
April 7, 2023
Tennis player holding two balls in his hand on court. Hit in the balls

“Hit in the balls”: How testicular impact could affect fertility

Learn how testicular impact affects fertility, prevention strategies, and treatment options for injuries.
Revised on
April 21, 2023
How weight loss medications may affect male fertility

How weight loss medications may affect male fertility

What you need to know about weight loss medications such as Ozempic, Wegovy, and Mounjaro and male fertility.
Revised on
January 2, 2024