Gregory Katz's Substack

Does the Watchman device prevent strokes?

You would think that a device marketed as a stroke reduction tool would have clear evidence that it actually reduces strokes.

Dec 13 • 

Gregory Katz, MD

November 2024

Dr. Oz at CMS

Why I'm optimistic about my old boss in this job

Nov 25 • 

Gregory Katz, MD

Can RFK Make America Healthy Again?

A better plan than you've been hearing

Nov 19 • 

Gregory Katz, MD

Political polls are like nutrition science - both are junk food for your mind

Garbage in, garbage out

Nov 4 • 

Gregory Katz, MD

A preventive valve replacement study shows the limits of the randomized trial

The way we treat problems with heart valves has been completely revolutionized over the course of the last few years.

Nov 1 • 

Gregory Katz, MD

October 2024

Why isn't your doctor radicalized about exercise and diet?

Some explanations and some guesses

Oct 25 • 

Gregory Katz, MD

The story behind Ozempic

A podcast on the story behind the most important drugs of all time

Oct 18 • 

Gregory Katz, MD

24:28

A lot of doctors have been wrong about blood transfusions

A podcast on the MINT trial

Oct 16 • 

Gregory Katz, MD

30:49

Why doesn't your doctor talk about diet and exercise?

Every single time I write something about prescription medications, I receive comments and questions about why doctors are always pushing pills instead…

Oct 11 • 

Gregory Katz, MD

Intermittent fasting doesn't work - unless it works for you

The challenges with studying an intervention like this

Oct 4 • 

Gregory Katz, MD

September 2024

Ozempic for kids and "healthy" Lunchables from YouTube Stars

The magnitude of the childhood obesity problem in our country is almost as hard to believe as it is depressing.

Sep 27 • 

Gregory Katz, MD

Heart disease prevention concepts that everyone should understand

Health literacy is might be the most important concept to understand when you work as a doctor who takes care of patients.

Sep 20 • 

Gregory Katz, MD