Why Men’s Testosterone Is Half Their Grandfathers — Ben Greenfield on The Tai Lopez Show

Estimated Reading Time: 9 minutes

The Decline of Testosterone and Modern Health Challenges

One of the central questions Tai Lopez and Ben Greenfield tackle is why the average man’s testosterone levels today are nearly half their grandfathers’. Ben points to missing building blocks (protein, creatine, vitamin D, zinc, magnesium, omega fatty acids), less sunlight, and a comfort-first lifestyle that removes fear, danger, and physical challenge — all factors that blunt male vitality. :contentReference[oaicite:0]{index=0}

Beyond hormones, they zoom out to the cultural shift toward ultra-convenience (screens, AI, on-demand everything) and how it erodes resilience, movement, and real-world engagement — the very stresses that once kept bodies robust. :contentReference[oaicite:1]{index=1}

COVID, Long COVID, and Regenerative “Better Living Through Science”

Tai and Ben discuss COVID origins, vaccine side effects, and the wave of long-COVID cardiovascular issues functional medicine doctors are seeing. The conversation explores blood-filtration protocols, trade-offs, and why some therapies are expensive or niche. They also cover peptides and regenerative medicine, including intraosseous needling for cartilage repair, which helped Ben take a knee from “30%” to roughly “85%.” :contentReference[oaicite:2]{index=2}:contentReference[oaicite:3]{index=3}

On peptides, they caution sourcing and contamination risks while noting system-wide anti-inflammatory benefits of BPC-157 and how small “baby doses” of GLP-agonists can blunt cravings without the severe side effects typical at full doses. :contentReference[oaicite:4]{index=4}:contentReference[oaicite:5]{index=5}

Diets, Everyday Choices, and the Built Environment

They compare keto, carnivore, Mediterranean, pescatarian, and vegan approaches—stressing whole foods and practicality over ideology. In rapid-fire ratings, Ben puts Mediterranean and pescatarian higher than most, while calling intermittent fasting “overrated,” and giving nuanced takes on milk (pasteurized vs. raw), supplements, and training. :contentReference[oaicite:6]{index=6}:contentReference[oaicite:7]{index=7}

Environmental health threads run throughout: microplastics in water and salts; EMF load from modern lighting and devices; circadian-friendly “biological” LEDs vs. high-flicker bulbs. Ben describes building a home optimized for air, light, water, and electricity, and mentions brands that lower flicker/EMF and allow evening red-shifted light. :contentReference[oaicite:8]{index=8}:contentReference[oaicite:9]{index=9}

Resources Mentioned

• BenGreenfieldLife.com — Ben’s website. 
• The Salt Fix by James DiNicolantonio 
• BlockBlueLight — circadian-friendly lighting brand.
• Ra Optics Blue Light Glasses
• Bon Charge — circadian-friendly lighting brand mentioned.

Call to Action

Explore more from Ben at BenGreenfieldLife.com. 

Check out Tai's “150 Body System”

TL;DR

Wide-ranging debate on modern health: why men’s T levels are down, COVID/long-COVID realities, peptides & cartilage regeneration, diet trade-offs, and how microplastics, EMF, and lighting shape daily health — plus pragmatic tools that actually help.