🎬 Episode Moments

Why Is Male Fertility Crashing Globally? - Dr Michael Eisenberg

modernwisdom
July 18, 2025
30 Moments

🎯 All Moments (30)

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Sperm Quality as an Opportunity to Improve Overall Health

Dr. Eisenberg emphasizes that while lower sperm quality can indicate increased health risks, it's more of a relative risk than an absolute certainty. He encourages men to view this as an opportunity to take ownership of their health, improve their lifestyle through better diet, exercise, and moderation, and potentially change their health trajectory for the better.

Health motivation
14:03
Duration: 0:34

Penis Size is Increasing Over Time?

Eisenberg shares a surprising finding from their study: penis length has slightly increased over time, contrary to expectations. He hypothesizes that this might be due to earlier puberty leading to longer genital development.

Penis Size knowledge
40:19
Duration: 1:30

The Importance of Early Varicocele Intervention

The doctor explains why varicoceles should be fixed sooner rather than later due to their progressive nature and potential for long-term damage. He emphasizes the importance of early identification and intervention, especially in children. He also mentions that the decision to fix a varicocele is a personal one, and not everyone needs it.

Male Fertility knowledge
23:22
Duration: 0:51

Age and Fertility in Men: What to Know

The doctor discusses the relationship between age and fertility in men. He mentions that men continue to make sperm throughout their lives, but sperm quality and volume do decline with age. He also notes that the risk of certain rare disorders, like autism, increases slightly with older fathers.

Male Fertility knowledge
28:49
Duration: 1:10

Comprehensive Assessment for Low Sperm Quality

Dr. Eisenberg explains the comprehensive assessment he conducts when men come in with low sperm quality, including reproductive history, prior exposures, health history, medications, lifestyle factors, and physical examination. He also touches on a case where a patient's semen turned bright blue due to medication, highlighting the often understudied effects of medications on semen quality.

Male Fertility knowledge
14:54
Duration: 2:11

Pharmaceutical Interventions for Sperm Quality: HCG and Clomiphene

The doctor discusses the use of pharmaceutical interventions like HCG and clomiphene for improving sperm quality in the right patients. He explains that these medications can help men who aren't making enough testosterone on their own. However, he stresses the importance of medical supervision rather than self-treatment.

Male Fertility knowledge
28:00
Duration: 0:49

Porn-Induced Erectile Dysfunction: Is It Real?

Dr. Eisenberg discusses the potential link between excessive porn consumption and erectile dysfunction, noting the accessibility and intensity of modern pornography. He explains how this can lead to difficulties maintaining erections in normal partnered settings and suggests retraining techniques, potentially involving sex therapy. This clip is valuable for raising awareness and encouraging open discussions about the impact of porn on sexual health.

Erectile Dysfunction knowledge
50:18
Duration: 0:53

Fixing Varicoceles: Process, Outcomes, and Considerations

The doctor discusses the process of fixing a varicocele, including surgical and radiological procedures. He explains the typical recovery timeline, expected improvements in semen quality (around 70% of the time), and the impact on conception rates. He also highlights the importance of considering the time lag for improvement when deciding between varicocele repair and IVF.

Male Fertility knowledge
20:01
Duration: 1:11

Hope After Azoospermia: Finding Sperm and Surgical Correction

Dr. Eisenberg discusses the emotional impact of an azoospermia diagnosis and emphasizes the importance of hope. He explains that about half the time, they can find sperm or correct a blockage. He also describes the sperm retrieval procedure and highlights that most men do great after the procedure.

Male Fertility motivation
25:51
Duration: 1:14

The IVF Revolution and the Future of Reproduction

Eisenberg discusses the increased use of IVF, attributing it to factors like declining sperm counts and couples waiting longer to have children. He touches on ethical considerations, such as embryo selection for traits like eyesight, and the potential future of in vitro gametogenesis to eliminate genetic diseases.

IVF Technology knowledge
33:53
Duration: 3:36

Unraveling the Causes of Declining Sperm Counts

The expert explores potential causes for declining sperm counts, dismissing genetics due to the pace of change. He focuses on environmental and lifestyle exposures like chemicals, microplastics, and endocrine-disrupting factors. While pinpointing specific causes remains complex, he emphasizes the need for further research.

Male Fertility knowledge
1:50
Duration: 0:00

The Role of Hormones in Erectile Function and Libido

Dr. Eisenberg explains the role of hormones in erectile function and libido. He explains that low testosterone can be a factor, especially for men with very low levels (100-200 range). He also differentiates between erectile function and libido, noting they are distinct but often related.

Hormones and Libido knowledge
44:11
Duration: 2:04

The Psychology of Erectile Dysfunction: How Stress Impacts Performance

Dr. Eisenberg explains how stress and anxiety can negatively impact erections, relating it back to our primal fight-or-flight response. He also discusses the vicious cycle of worrying about ED and how it can exacerbate the problem. This clip offers valuable insight into the psychological factors affecting sexual health.

Erectile Dysfunction knowledge
47:07
Duration: 1:53

Don't Ignore the Signs: Dr. Eisenberg on Underrated Urological Issues

Dr. Eisenberg emphasizes the importance of men being proactive about their urological health and seeking medical attention for any concerns. He highlights the positive impact of Viagra in making men more comfortable discussing erectile dysfunction and encourages open communication with partners and doctors. This clip is valuable for promoting awareness and destigmatizing conversations around men's health issues.

Men's Health advice
57:39
Duration: 0:53

Microplastics Found in Testicles: A Fertility Concern?

The expert discusses a study finding microplastics in dog and human testicles, highlighting ubiquitous exposure. While the effects are still under investigation, concerns exist due to potential endocrine-disrupting chemicals in plastics. The study found correlations between higher microplastic levels and lower semen quality, raising concerns about potential impacts on male fertility.

Male Fertility knowledge
4:12
Duration: 1:31

Reducing Pesticide and Chemical Exposure for Better Fertility

Dr. Eisenberg advises on minimizing exposure to pesticides by choosing organic produce, especially fruits and vegetables with edible peels like strawberries. He also suggests being mindful of chemicals like phthalates and phenols in packaging and skincare products, recommending mineral sunscreens over those with endocrine-disrupting properties.

Male Fertility advice
6:03
Duration: 0:59

Common Interventions for Improving Sperm Quality

The doctor outlines common interventions for improving sperm quality, including varicocele repair, hormone optimization, vasectomy reversal, and sperm retrieval procedures for men with no sperm in their ejaculate (azoospermia). He also discusses the emotional impact of an azoospermia diagnosis and the surgical options available.

Male Fertility knowledge
24:13
Duration: 1:20

When Does Male Fertility Begin to Decline?

Dr. Eisenberg explains how male fertility declines with age, starting gradually in the late teens/early 20s. He notes the American Society of Reproductive Medicine defines 'older father' as 40+, and discusses the increase in DNA mutations and potential impact on offspring.

Male Fertility knowledge
30:20
Duration: 0:54

Declining Testosterone and Its Impact on Male Fertility

The discussion shifts to testosterone levels and their relationship to male fertility. Dr. Eisenberg notes that testosterone levels are declining, potentially due to factors like sedentary lifestyles and obesity. He also clarifies the inverse relationship between testosterone supplementation and sperm counts.

Testosterone Levels knowledge
38:30
Duration: 1:12

Varicoceles: What Men Need to Know

The doctor provides a detailed explanation of varicoceles, including their prevalence, causes, effects on fertility and testosterone levels, and potential complications. He mentions that varicoceles are common in men and can lead to lower sperm counts and testosterone levels. He also touches on the reasons for fixing them, such as fertility, discomfort, and testicular growth issues in kids.

Male Fertility knowledge
18:31
Duration: 1:13

The Ultimate Checklist for Male Reproductive and Sexual Health

Dr. Eisenberg provides a checklist for men to maintain reproductive and sexual health, including exercise, conscious diet, avoiding smoking, moderate alcohol consumption, prioritizing sleep, and minimizing stress. He also advocates for men to establish a baseline testosterone level and consider getting a semen analysis early. This clip offers practical and actionable steps for men to proactively manage their reproductive health.

Men's Health advice
55:37
Duration: 0:35

Understanding Semen Analysis: What's Being Measured?

Dr. Eisenberg details the components of a semen analysis, including volume, concentration (million sperm per milliliter), motility (movement), and morphology (shape). While declining sperm counts are the primary concern, he clarifies that other parameters are more challenging to measure consistently over time, emphasizing that count is the most reliable indicator of declining fertility.

Male Fertility knowledge
7:20
Duration: 1:25

Sperm Count: The Key Indicator of Male Fertility

The expert discusses the most important factors in assessing male fertility, highlighting sperm count as the most critical. He explains the typical range of moving sperm and the levels that may require assisted reproductive techniques like intrauterine insemination or in vitro fertilization. Despite sperm count not being a perfect measure, it provides an overall assessment of potential fertility issues.

Male Fertility knowledge
8:45
Duration: 1:37

The Surprising Link Between Sperm Quality and Overall Health

Dr. Eisenberg emphasizes the strong link between overall health and sperm quality. Men with conditions like hypertension, diabetes, and obesity tend to have lower sperm quality. He also notes that semen quality is correlated with later health risks, including higher risks of testicular and prostate cancer, heart disease, diabetes, and even mortality, highlighting sperm quality as a biomarker for overall health.

Male Fertility knowledge
10:22
Duration: 2:25

The Real Causes of Erectile Dysfunction

Dr. Eisenberg clarifies that most erectile dysfunction is due to organic causes (blood flow issues) rather than psychological factors. He lists common causes such as vascular conditions, medications, and pelvic surgeries, with hormonal causes being less frequent.

Erectile Dysfunction knowledge
41:49
Duration: 1:10

The Sleep-Fertility Connection: How Sleep Impacts Sperm and Testosterone

Dr. Eisenberg explains the U-shaped relationship between sleep and sperm count, highlighting the importance of getting enough (6-9 hours) but not too much sleep. He also discusses how stress negatively impacts testosterone levels due to the influence of cortisol. This clip provides actionable information on how lifestyle factors affect male fertility and hormonal balance.

Male Fertility knowledge
52:54
Duration: 1:12

Actionable Steps to Improve Sperm Quality

The doctor advises men to be aware of their semen quality and get it checked early. He also emphasizes the importance of basic health screening and living a healthy lifestyle, including maintaining a good body weight and eating nutritious foods. He suggests that these are actionable and easy steps to improve sperm quality.

Male Fertility advice
27:05
Duration: 0:55

Simple Steps to Boost Sperm Quality

Dr. Eisenberg gives actionable advice for men seeking to improve their sperm quality, emphasizing the importance of a healthy lifestyle. He recommends a diet rich in whole grains, fruits, and vegetables, regular exercise, and maintaining a healthy body weight. He also advises limiting exposure to plastics to minimize potential harm.

Male Fertility advice
2:58
Duration: 0:54

Simple Steps to Improve Blood Flow and Erectile Function

Dr. Eisenberg gives practical advice on improving blood flow for better erections, including quitting smoking, moderating alcohol consumption, and exercising more. He emphasizes that these steps are beneficial for heart health as well.

Improving Blood Flow advice
43:34
Duration: 0:37

The Alarming Decline in Global Sperm Counts

Dr. Eisenberg discusses the alarming decline in global sperm counts over the past 40 years, citing studies from the '90s, 2017, and 2023 that solidify this trend. He highlights a roughly 1% annual decline initially, which has accelerated to about 2% in recent years, emphasizing the urgent need to understand the causes behind this decline.

Male Fertility knowledge
0:00
Duration: 0:17