Modern Wisdom #969 - Dr Michael Eisenberg - How To Protect & Improve Your Fertility As A Man
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Jul 19, 2025 
Dr. Michael Eisenberg, a Professor of Urology at Stanford and a leading expert in male fertility, discusses the alarming trends in male reproductive health. He reveals that global sperm counts have plummeted by over 50% in the last decades and explores the lifestyle factors contributing to this decline, like microplastics and smoking. The conversation dives into effective strategies for improving sperm quality, the impact of age, and the surprising links between pornography and erectile dysfunction, encouraging men to take charge of their reproductive health.
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Global Sperm Count Decline
- Global sperm counts have declined by over 50% in the last 40 years worldwide.
- The decline seems driven by environmental exposures, not genetics or lifestyle alone.
Improve Fertility With Heart-Healthy Lifestyle
- Anything good for your heart like diet, exercise, and maintaining healthy weight also improves fertility.
- Try to minimize exposures to plastics, chemicals, and pesticides that disrupt hormones.
Sperm Quality Reflects Men's Health
- Semen quality correlates tightly with overall men's health and risk of future diseases.
- Low sperm quality is associated with higher risks of cancers, heart disease, diabetes, and mortality.
