Newsletter

I turned 70. Here’s what my bloodwork actually says. And why “normal for your age” is the most dangerous phrase in medicine.

Hey Reader, Dr Karl here. I turned 70 last week. So I did 70 push-ups — and then I did something more useful. ...

Your HDL should pass your triglycerides by your mid-50s. Does it?

​ Everyone wants the one number that predicts how well they'll age. After five years tracking biomarkers across more than 100 clients, I'll give you mine. It isn't a supplement, and it isn't on your doctor's radar. It's HDL. And more precisely, it's what your HDL does relative to your triglycerides as the years ...

Do your lab results fit the pattern?

Hey Reader, Dr Karl here.​​​Let me introduce you to a different perspective of looking at your lab results with the aim being it will change how you use your results to understand your health... and what action you may need to consider taking.​Certainly my position has changed over the last 14 years. ...

“Your old panel was a snapshot. I can see more in it today”

Hey Reader, Dr Karl here. You're getting this because we've actually worked together either recently or in the past. Your panel was in my file, and I read it the way I read everything — not by asking whether your numbers ...

Meet Sarah. Everything looked fine. Nothing was.

47, up 25 pounds, wiped out by 2pm, told to eat less and move more. Here's what was actually going on. Sarah is 47, about 25 pounds over where she wants to be, exhausted by mid-afternoon, foggy, and sleeping without ever feeling rested. She'd already tried keto, intermittent fasting, more cardio, less cardio, three different ...