# Global Trends in Male Testosterone and Fertility Decline > Live situation record from CLSTR: https://clstr.news/situations/june-mens-health-month-initiatives > Updated: 2026-09-05T14:57:34.000Z. Sources: 82. Developments: 27. A meta-analysis presented at the European Society of Human Reproduction and Embryology (ESHRE) meeting confirms a 54% decline in total testosterone levels in men between 1972 and 2019. Led by Hagai Levine of the Hebrew University of Jerusalem, the study of over 118,000 men across Israel, the United States, Brazil, Finland, and Denmark noted that this decline, exceeding 1% annually, accelerated after 2000. Researchers link this trend to obesity, diabetes, metabolic syndrome, and exposure to endocrine-disrupting chemicals. The European Chemicals Agency (ECHA) has identified bisphenols, such as BPA, as reproductive toxins. While the EU is phasing out BPA in food-contact materials, some products may remain on the market until 2028, and substitutes like BPS may also affect male reproductive systems. Medical experts, including Mikael Lehtihet of the Karolinska Institutet, warn that while more men are seeking evaluations for deficiency, true deficiency is rare among healthy men and often linked to underlying conditions like weight gain or type 2 diabetes. A diagnosis requires repeated low values and specific symptoms, such as a significant loss of sexual desire. Modern lifestyle factors—including sedentary behavior, chronic stress, poor sleep quality, and diets high in processed foods—are causing younger men to experience low testosterone earlier than in the past. This can impact muscle mass, bone density, and fat distribution. Furthermore, the misuse of anabolic steroids for muscle enhancement poses severe risks, including cardiovascular disease, hypertension, kidney damage, and impaired fertility. To combat declining sperm quality, specialists recommend lifestyle interventions such as a Mediterranean diet and regular exercise. ## Timeline ### 2026-09-05: Testosterone levels and the impact of hormone decline Declining testosterone levels in men are linked to fatigue, muscle loss, and mood changes. Research shows a long-term generational decline driven by stress, diet, and environmental factors. 2 sources. https://clstr.news/cluster/testosterone-levels-and-the-impact-of-hormone-decline ### 2026-08-12: Testosterone health: risks of deficiency and steroid misuse Testosterone is vital for male health and muscle maintenance, but low levels are rising in younger men due to lifestyle factors, while improper steroid use poses significant health risks. 2 sources. https://clstr.news/cluster/testosterone-health-risks-of-deficiency-and-steroid-misuse ### 2026-08-09: Medical experts warn of rising testosterone deficiency inquiries and hormonal risks Medical experts warn that true testosterone deficiency is rare among healthy men, often linked to underlying health issues or environmental endocrine disruptors like bisphenols. 2 sources. https://clstr.news/cluster/medical-experts-address-rising-testosterone-deficiency-concerns ### 2026-08-03: Global Study Finds 54% Drop in Male Testosterone Over Five Decades A study shows a 54% drop in male testosterone since 1972, tied to obesity, diabetes and chemicals, while experts advise lifestyle changes to boost sperm health. 3 sources. https://clstr.news/cluster/global-study-finds-54-drop-in-male-testosterone-over-five-decades ### 2026-07-24: Spain sees sharp decline in men's testosterone levels, health experts warn Spanish men’s testosterone levels have halved over decades, sparking health warnings about low libido, fertility risks and the unchecked sale of hormone supplements. 2 sources. https://clstr.news/cluster/spain-sees-sharp-decline-in-mens-testosterone-levels-health-experts-warn ### 2026-07-20: Men's Hormonal Health: Focus Beyond Testosterone on International Men's Day Men's health extends beyond testosterone; fatigue and low libido often arise from stress, sleep loss, obesity or diabetes. Proper medical evaluation is essential before hormone therapy, and International Men's 3 sources. https://clstr.news/cluster/mens-hormonal-health-focus-beyond-testosterone-on-international-mens-day ### 2026-07-17: Hair Loss Linked to Lower Prostate Cancer Risk Study shows men who lose hair early may have up to 45% lower prostate cancer risk, possibly due to androgen‑related genetics; researchers urge more investigation. 2 sources. https://clstr.news/cluster/hair-loss-linked-to-lower-prostate-cancer-risk ### 2026-07-17: Study Finds Men’s Testosterone Levels Fell 54% Over 50 Years A London‑presented study reports a 54% average drop in men’s testosterone over 50 years, raising concerns about male reproductive health, but experts note large uncertainties and limited data scope. 3 sources. https://clstr.news/cluster/global-study-finds-54-decline-in-mens-testosterone-over-50-years ### 2026-07-16: Low Testosterone May Signal Higher Cancer Risk, Says Urology Expert A study of 24,500 men found very low testosterone linked to higher overall cancer risk and mortality, though not directly to prostate cancer, and experts warn it signals broader health issues. 2 sources. https://clstr.news/cluster/low-testosterone-may-signal-higher-cancer-risk-says-urology-expert ### 2026-07-12: Infertility Research Highlights Diet Benefits for Men and Rising Female Rates Spanish researchers link weekly nut intake to better male semen quality, while a Lancet study warns of a global surge in infertility among women aged 35‑49, projecting 79.6 million cases by 2036. 2 sources. https://clstr.news/cluster/infertility-research-highlights-diet-benefits-for-men-and-rising-female-rates ### 2026-07-12: Men's obesity causes distinct health risks, study finds A new study finds male obesity leads to testosterone loss and unique complications, urging gender‑specific treatment; a 44‑year‑old taxi driver illustrates the challenges. 2 sources. https://clstr.news/cluster/mens-obesity-causes-distinct-health-risks-study-finds ### 2026-07-10: Global Testosterone Decline Triggers Fertility Concerns A meta‑analysis of 118,000 men shows a 54 % global testosterone drop in 50 years, tied to obesity and pollutants; scientists warn of a male fertility crisis, though some dispute the sperm‑count decline. 8 sources. https://clstr.news/cluster/global-study-finds-mens-testosterone-levels-halved-over-five-decades ### 2026-07-07: Men's testosterone levels fell 54% over five decades, study shows A meta‑analysis of six studies shows men's average testosterone fell 54 % from 1972‑2019, likely driven by obesity, diabetes and environmental factors, sparking concerns over male reproductive health. 5 sources. https://clstr.news/cluster/global-study-finds-male-testosterone-levels-halved-over-five-decades ### 2026-06-28: Male Fertility Crisis: Only 25% of Men Have Healthy Sperm Experts say only 25% of men have healthy sperm, with counts halving over five decades due to lifestyle and environmental factors, urging early testing and public awareness of male infertility. 6 sources. https://clstr.news/cluster/male-fertility-crisis-only-25-of-men-have-healthy-sperm ### 2026-06-24: U.S. Men's Health Month Drives Early Checkups and Screenings Men’s Health Month in the U.S. encourages early checkups, screenings for heart disease and cancers, and mental‑health discussions to reduce the six‑year life‑ expectancy gap. 3 sources. https://clstr.news/cluster/us-mens-health-month-drives-early-checkups-and-screenings ### 2026-06-24: Revelstoke Men's Health Support Network Hosts Monthly Sessions for Men’s Health Month Jake Stanfield’s Revelstoke Men’s Night offers free, sober monthly meetings to combat male suicide and addiction, highlighted during Men’s Health Month. 3 sources. https://clstr.news/cluster/revelstoke-mens-health-support-network-hosts-monthly-sessions-for-mens-health-month ### 2026-06-21: U.S. Health Department Highlights Men’s Health and Fatherhood in June U.S. HHS marks Men’s Health Month, with Adm. Brian Christine stressing a Trump‑era focus on men’s health, fatherhood, and suicide prevention, while noting declines in obesity and rises in fertility. 2 sources. https://clstr.news/cluster/us-health-department-highlights-mens-health-and-fatherhood-in-june ### 2026-06-21: Men's mental health awareness walks and talks held in India and Uganda Men's mental health events were held in Nagaland, India, and Ntinda, Uganda, featuring community walks, talks and open‑forum discussions to raise awareness and address stigma. 2 sources. https://clstr.news/cluster/mens-mental-health-awareness-walks-and-talks-held-in-india-and-uganda ### 2026-06-19: Men's Mental Health Month Spotlights Stigma and Rising Suicide Risk June's Men's Mental Health Month underscores high suicide rates among men, cultural stigma, and the need for better emotional education, with rising deaths in Louisiana and similar concerns in Peru. 6 sources. https://clstr.news/cluster/mens-mental-health-month-spotlights-stigma-and-rising-suicide-risk ### 2026-06-17: Men's Mental Health Awareness Month highlighted in South Africa and US June’s Men’s Mental Health Awareness Month is spotlighted in South Africa, where men account for 80% of suicides, and at Iowa State University, where counseling services urge men to seek help and reduce stigma. 2 sources. https://clstr.news/cluster/mens-mental-health-awareness-month-highlighted-in-south-africa-and-us ### 2026-06-16: Men's Reproductive Health Push Calls for Early Urology and Fertility Checks Colombian and Argentine health experts call on men to undergo early urology and fertility screenings to detect prostate issues and preserve reproductive health, stressing lifestyle measures and regular checkups 2 sources. https://clstr.news/cluster/mens-reproductive-health-push-calls-for-early-urology-and-fertility-checks ### 2026-06-12: Men's Health Month Spotlights Male Fertility Device and Australian Outreach A smartphone semen analyzer with 98 % accuracy is promoted in the US, while an Australian MP urges men to seek health and mental‑health support during Men’s Health Month. 2 sources. https://clstr.news/cluster/mens-health-month-spotlights-male-fertility-device-and-australian-outreach ### 2026-06-11: International Men's Health Week Spotlights Prostate Cancer Screening in Latin America International Men’s Health Week promotes preventive care, while Venezuela’s anti‑cancer society urges early prostate screening amid rising cases. 2 sources. https://clstr.news/cluster/international-mens-health-week-spotlights-prostate-cancer-screening-in-latin-america ### 2026-06-10: Men's Mental Health Awareness Month Highlights Need for Support in US Communities June's Men’s Health Month urges U.S. men to break stigma, seek help and improve mental‑health access as suicide rates remain high. 2 sources. https://clstr.news/cluster/mens-mental-health-awareness-month-highlights-need-for-support-in-us-communities ### 2026-06-08: Men's Health Month campaign stresses preventive screenings Health officials highlight Men’s Health Month to push men toward annual exams, cardiovascular checks, cancer screenings and mental‑health care, citing higher male mortality from preventable diseases. 5 sources. https://clstr.news/cluster/mens-health-month-campaign-stresses-preventive-screenings ### 2026-06-02: Canada Launches First Men and Boys Health Strategy as June Highlights Global Mental Health Awareness Canada finalises consultation for its first Men and Boys Health Strategy, set for 2026, as June’s global Men’s Mental Health Month raises awareness and resources worldwide, including Malta helplines. 3 sources. https://clstr.news/cluster/june-mens-health-campaigns-spotlight-lgbtq-care-and-mental-health-support ### 2026-06-01: June Men’s Health Month Promotes Screening and Fertility Awareness June’s Men’s Health Month urges screenings, mental‑health care, and fertility awareness, urging families to support men’s well‑being. 5 sources. https://clstr.news/cluster/june-mens-health-month-promotes-screening-and-fertility-awareness --- Cite as: Global Trends in Male Testosterone and Fertility Decline. CLSTR, https://clstr.news/situations/june-mens-health-month-initiatives