This week is Cancer Screen Week. It’s a one-sided campaign sponsored by industry and the American Cancer Society that urges people to get screened. The truth is that the scientific evidence for cancer screening is not convincing. What’s more, screening comes with potential harms. I know; it’s counter-intuitive, but it’s what the evidence says. Benjamin […]
Author: Dr John
Freedom of speech is in the news. Intolerance of ideas isn’t just affecting our colleges and universities. I think illiberalism has spread to health and medicine. For many reasons, scientists and clinicians alike have grown weary of debate. This is bad. The philosopher Karl Popper said science advances through falsification. Without the challenge of ideas, […]
One of the biggest challenges in medicine and science is understanding correlation and causation. Medicine has become increasingly evidence-based. But what does the evidence really say? Is a study signal or noise? Does enough correlation mean causation (e.g. smoking causes cancer)? Â How much hope can we put on big data? In the last few years, […]
It comes in a large white envelope each month. It’s marked confidential. When I hold it up to the light, I can see through the envelope. I can’t see the details, but the colored graphs give it away. It’s my monthly productivity report. Most employed doctors get these graphs. These “dashboards” of value include your […]
Our cautionary left atrial appendage occlusion (Watchman) editorial is now published in a prominent medical journal, called Heart Rhythm. My co-authors are Drs. Andrew Foy and Gerald Naccarelli from Penn State. It was a peer-reviewed version of my previous theheart.org | Medscape Cardiology column. Watchman and other similar devices are plugs that occlude the left atrial […]
Once again, the Nobel prize for economics–not science and medicine–has immense influence on the practice of medicine. Every day, in fact. This year, Richard Thaler, a behavioral economist at the University of Chicago, won for his work on human biases and temptations. The famous writer Michael Lewis (Moneyball) has a nice essay on Thaler’s work […]
Richard Fries, a cycling-safety advocate in Boston, uses the phrase we get what we tolerate to describe the dire situation of drivers killing cyclists and pedestrians. Many humans die from these collisions because we tolerate it. An inattentive driver kills a person on a bike; then nothing changes. The phrase applies well to other dubious […]
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Medicare for All?
Maybe it’s sampling error, but I am seeing an increasing number of people who are being financially crushed by the US healthcare system. One recent patient had a real rhythm problem, one that could or should be fixed with a procedure. But he could not afford it. He had insurance but could not afford to […]
(This post introduces my latest column on TheHeart.org | Medscape Cardiology. It’s about stroke in young people.)Â *** We define stroke as the death of brain cells. The typical cause is a blocked blood vessel in the brain. Stroke usually occurs in older people who have established blood vessel disease. Stroke is bad; it may […]
The European Cardiology Congress, ESC as it is called, has grown into the largest medical meeting in the world. This year, more than 31,000 attendees from 153 countries came to Barcelona. I was busy. Here is an update of the big stories: Inflammation:Â Experts agree that inflammation associates with heart disease. One of the keys […]
I was furiously tapping on the computer when he asked: “Doc, what happens if I don’t have the procedure you are recommending?” Glee spread through my body. I grinned and nearly jumped up from the stool to hug him. I enthusiastically answered. Few patients ask this vital question. I tweeted about the encounter: An older […]