Good morning!

Here's your Saturday 7 roundup!

📉 What's on the decline:

A man today has about HALF the testosterone as a man in 1960.

This matters because there is a strong correlation between testosterone and wellbeing (mood, motivation, energy, vitality, fertility, libido), chronic disease (T2D, CVD, etc.) and mortality risk.

The cause of this decline is multifactorial including:

• More xenoestrogens 
• More phytoestrogens 
• More body fat
• Less Sun
• Less Sleep
• Less Exercise 

Look at what high school fitness looked like in 1962!

🥩 Is it the fat:

While the declining testosterone levels are multifactorial, I think the kinds of fat we are eating play perhaps the most significant role.

For example, in 1984 researchers conducted a small, fascinating study. (r) 

They took 30 men, eating 40% of their calories from fat (mostly animal fat), and put them on a lower fat diet (25%), replacing the animal fats with more polyunsaturated vegetable fats.

Basically, the diet we're told to eat today. 

The switch from the higher fat diet (with higher saturated fat; P/S-ratio 0.15) to the lower fat diet (with P/S-ratio of 1.22) resulted in:

⬇️ Testosterone

⬇️ Free testosterone 

⬇️ Androstenedione

What's interesting is that we know testosterone levels have been steadily decreasing since the mid-20th century; however, total fat consumption hasn't dropped.

What has changed is the kinds of fat we eat and the ratio of saturated fats to polyunsaturated fats.

We have substituted animal fats for vegetable fats.

While we are told saturated fats are dangerous, there is a positive correlation between saturated fat intake and testosterone levels, and a positive correlation between testosterone levels and reduced chronic disease and mortality risks. 

Steak > Seed Oils

🐔 How my farmer raises chickens:

For the last few weeks, I've been talking about fat, and how fats aren't created equal.

For example, 100 grams of fat from steak does NOT equal 100 grams of fat from soybean oil.

Also, depending on how a chicken is raised, their fat can be closer to seed oils than it is to steak!

This is how my (and Lillie's) farmer raises chicken.*

*Lillie and I both live in Missouri and get a lot of our food from David's farm. 

😁 How to be (un)happy:

I'd add "laugh" to the list.

P.S.

Don't drink this coffee.

🧠 What quote I've been thinking about:

"Write your obituary and try to figure out how to live up to it."

– Warren Buffett, on identifying what matters

💰 When to double-down:

This is a lesson I've heard many success people say:

When something works double-down. If it doesn't, don't continue to throw "good money at bad."

Michael Saylor explains it as: diversification is selling your winners to buy losers.

Peter Thiel:

“Once something works, people often underestimate it. And when things aren’t working, they underestimate how much trouble they’re in.”

☀️ How planets orbit:

What you think our solar system looks like moving in space VS what it actually looks like! 

As always, it's an absolute pleasure and honor getting to spend some time with you, hope you have a great weekend!

Kevin

P.S.

The adjective for metal is metallic, but not for iron, which is ironic. 

Dr. Kevin Stock
Meat Health, LLC

NED LLC (The Snore Solution)
 

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