Understanding the Secular Decline in Testosterone: Mechanisms, Consequences, and Clinical Perspectives
January 2026
in “
International Journal of Molecular Sciences
”
TLDR Lifestyle changes and environmental strategies can help address declining testosterone levels.
The article examines the secular decline in testosterone levels, attributing it to factors like obesity, sedentary lifestyle, poor diet, inadequate sleep, stress, and exposure to endocrine disruptors. This decline is linked to health issues such as reduced fertility, metabolic and cardiovascular diseases, psychological effects, and musculoskeletal problems. Interventions to address this decline include lifestyle changes like weight loss, exercise, balanced diet, and stress management, alongside pharmacological options like testosterone replacement therapy. The article highlights evidence from studies, including a global analysis of over 1 million subjects, indicating a significant annual decline in testosterone levels.