Hey Karl, Dr Karl here.

I get asked all the time what the “one thing” is that separates the people who age well from those who don’t. After tracking biomarkers across 100+ clients over the past five years, the answer keeps coming back to the same place.

Higher HDL. Every single time.

When I plot fasting HDL against age in my data set, the pattern is unmistakable — and it has not changed once in over five years of tracking.

People who survive longer consistently have higher HDL. And if they’re non-insulin resistant? Their HDL is dramatically higher.

But here’s the part that really matters: it’s not just about having high HDL.
​It’s that their HDL is higher than their triglycerides. ​
There’s a crossover point where HDL overtakes triglycerides on the chart — and for non-insulin resistant people, that happens by their mid-50s. For insulin resistant people?It never happens. Not once in my data.

That crossover is one of the most telling signals in all of metabolic health.
And it comes from two of the cheapest labs you can order — about $10 total.

I laid all of this out in my latest video using real scatter plots from my own data set. Below is one of the key charts —
the foundational HDL vs Age scatter plot showing the divergence between insulin resistant and non-insulin resistant people. Take a look:

FROM THE VIDEO: ​
​The HDL vs. Age scatter plot​
showing how non-insulin resistant people (green line) see HDL rise steeply with age
while insulin resistant people (red line) remain flat.

​
​The divergence widens dramatically after age 40.

▶ Watch this clip:

​https://youtu.be/AJnzQpXwqGQ?t=249​

Here’s the bottom line:​
your labs tell a story that your doctor’s annual checkup misses. A single biomarker like HDL, read in the right context, reveals more about your metabolic trajectory than a stack of “normal” results ever will.

I wrote Unlocking Optimal Metabolic Health:
​A Data-Driven Approach to Thriving at Any Age​
to show you exactly how to read your labs, see the patterns, and take action based on real data. — not generic reference ranges.
​

📗 Grab your copy of the book here:
​https://ketonaturopath.com/our-books/​
​

🩸 Get your labs done

Your labs are your map.
The book is your guide.

Start with both.

Talk soon,

Dr. Karl Goldkamp