The Journal
Dr. Dave on what actually works.
Twenty years of clinical practice, distilled into honest writing on longevity, cellular health, and the protocols I use myself.
Start Here
New to The Journal?
How Many CFU Should a Probiotic Have? (It’s Not What You Think)
How many CFU should a probiotic have? A doctor explains what CFU means and why survival matters far more than the front-of-bottle number.
Do Probiotics Help With Belly Fat? What the Science Says
Do probiotics for belly fat actually work? A doctor gives an honest look at the science on gut bacteria and visceral fat, hype versus reality.
Do Probiotics Need to Be Refrigerated? A Doctor Explains
Do probiotics need to be refrigerated? A doctor busts the fridge myth and explains why delivery and formulation matter far more.
Latest from the Journal
Do Probiotics Help With Belly Fat? What the Science Says
Do probiotics for belly fat actually work? A doctor gives an honest look at the science on gut bacteria and visceral fat, hype versus reality.
Do Probiotics Need to Be Refrigerated? A Doctor Explains
Do probiotics need to be refrigerated? A doctor busts the fridge myth and explains why delivery and formulation matter far more.
Can Bloating Cause Weight Gain? A Doctor Explains
Can bloating cause weight gain? A doctor separates gas and water from real fat, explains the gut's role, and shares practical ways to feel less puffy.
Probiotics With Prebiotics: Why You Need Both
Probiotics with prebiotics explained: a doctor breaks down the difference, the synbiotic concept, and why a probiotic alone is half a product.
7 Signs of an Unhealthy Gut You Shouldn’t Ignore
A doctor walks through 7 common signs of an unhealthy gut, bloating, fatigue, cravings, and more, and what they say about your microbiome.
Probiotics and Bloating: Why a Good One Shouldn’t Upset You
Probiotics and bloating: a doctor explains why a good probiotic helps, why a cheap one can backfire, and what a quality formula should do.
Sunday Letter
Get next week's letter in your inbox.
One short letter every Sunday — what I'm reading, what I'm experimenting with, and the protocols I'm refining.
More from the archive
The Best Prebiotic Foods (and Why Probiotics Need Them)
A doctor's list of the best prebiotic foods, garlic, onion, oats, bananas and more, and why a probiotic without prebiotics does only half the job.
Can You Take Too Many Probiotics? What a Doctor Says
Can you take too many probiotics? A doctor explains what 'too much' really looks like and why a bigger CFU number isn't better.
How to Improve Your Gut Health: A Doctor’s Guide
A doctor's practical guide on how to improve gut health, diet diversity, fermented foods, sleep, stress, antibiotics, and the probiotic-prebiotic combo.
How Long Do Probiotics Take to Work? A Doctor Explains
How long do probiotics take to work? A doctor gives a realistic timeline, the signs they're working, and why consistency matters.
Telomerase Activators: What They Are and How the Category Works
What is a telomerase activator? Dr. Dave Woynarowski, MD explains the category, the evidence behind TA-65, and where natural compounds and telomere support fit.
The Best Probiotic for Weight Loss (What Actually Works)
A doctor's honest take on the best probiotic for weight loss, what to look for in strains, prebiotics, and delivery, and what no pill can do.