All posts by Steven Novella

Founder and currently Executive Editor of Science-Based Medicine Steven Novella, MD is an academic clinical neurologist at the Yale University School of Medicine. He is also the host and producer of the popular weekly science podcast, The Skeptics’ Guide to the Universe, and the author of the NeuroLogicaBlog, a daily blog that covers news and issues in neuroscience, but also general science, scientific skepticism, philosophy of science, critical thinking, and the intersection of science with the media and society. Dr. Novella also has produced two courses with The Great Courses, and published a book on critical thinking - also called The Skeptics Guide to the Universe.

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  • Founder and currently Executive Editor of Science-Based Medicine Steven Novella, MD is an academic clinical neurologist at the Yale University School of Medicine. He is also the host and producer of the popular weekly science podcast, The Skeptics’ Guide to the Universe, and the author of the NeuroLogicaBlog, a daily blog that covers news and issues in neuroscience, but also general science, scientific skepticism, philosophy of science, critical thinking, and the intersection of science with the media and society. Dr. Novella also has produced two courses with The Great Courses, and published a book on critical thinking - also called The Skeptics Guide to the Universe.

Line graph showing increasing autism prevalence per 1,000 8-year-olds from 2000 to 2016. Non-profound autism rises from 3.9 to 14.3; profound autism rises from 2.7 to 4.6. Non-profound outpaces profound across all years.

Latest Autism Data

In April of 2025, HHS secretary RFK Jr. stated: “The autism epidemic is running rampant,” said U.S. Health and Human Services (HHS) Secretary Robert F. Kennedy, Jr. “One in 31 American children born in 2014 are disabled by autism. That’s up significantly from two years earlier and nearly five times higher than when the CDC first started running autism surveys in children...

/ February 11, 2026
A group of elderly adults exercises together outdoors in a park, following an instructor in white practicing tai chi. Some participants squat or stretch, all smiling and appearing engaged in the activity. Trees and grass are in the background.

The Data Is In – Exercise Is Good For You

Many times in my career I have sat across from a patient who expressed that they are getting serious about their health, and then rattle off a list of things that they are doing to improve their health – all mostly worthless. I do not blame them – they are victims of a self-help, supplement, and wellness industry that has completely mislead...

/ February 4, 2026
Large factory chimneys releasing thick smoke into the air, with industrial buildings and ships in the foreground under a cloudy sky, indicating heavy air pollution.

The Health Effects of Air Pollution

Air pollution remains a grave threat to human health, but MAHA is doing nothing about it.

/ January 28, 2026
The World Health Organization logo features a blue globe with a staff and snake symbol, surrounded by olive branches, next to the blue text "World Health Organization.

The World Health Organization on Traditional Medicine

The World Health Organization updated their guidelines on "traditional medicine." Unfortunately, as has been the case in the past the WHO tends to be far too credulous about unproven and disproven treatments.

/ January 21, 2026
A variety of foods shaped in a heart, divided into Protein, Dairy & Healthy Fats; Vegetables & Fruits; and Whole Grains, illustrating a balanced diet. Foods include fish, eggs, cheese, vegetables, fruits, bread, and rice.

RFK Jr. Turns the Food Pyramid on Its Head

The antivax activist who is now our Secretary of Health and Human Services, Robert F. Kennedy, Jr. has turned his attention briefly from vaccines to food, all in order to promote the consumption of more meat and dairy products. Will this "make America healthy again"? I think you know the answer.

/ January 14, 2026
A man in a suit speaks at a podium with the U.S. presidential seal, gesturing with his hands, while another man in a suit stands behind him, listening attentively.

RFK Jr. Decimates Vaccine Schedule

As we have been warning for months that he would do, HHS Secretary Robert F. Kennedy, Jr. is coming to take away your vaccines. His opening gambit is to remake our system in the image of Denmark, but he won't stop there.

/ January 7, 2026
CDC campus

So Long 2025

This will be my last post of the year and as usual I like to look back at how SBM is doing. We have now completed 17 years as a blog, which I think is something in itself. As always I have to thank David Gorski and all of the regular contributors here for their tireless work without any compensation except fulfilling...

/ December 17, 2025
A medical machine processes blood through tubes attached to a patient’s arm, which is resting on a table; the setup is in a clinical room with various medical devices.

Extracorporeal Blood Oxygenation and Ozonation

There is an entire industry catering to people who, as Webb once famously said on the hilarious Homeopathic A&E skit, have “more money than sense.” This is the so-called “wellness” industry, now supercharged by an online army of “wellness influencers”. At first approximation, this entire industry is basically a scam. That may sound unfair, but it is built into its very essence....

/ December 10, 2025
An assortment of fast food and snacks, including a cheeseburger, hot dog, pepperoni pizza slice, french fries, potato chips, chocolate bar, donuts, cookies, popcorn, onion rings, and a glass of soda with ice.

The War Over Ultraprocessed Foods

Recently the city of San Francisco sued several food giants (Kraft Heinz, Mondelez and Coca-Cola) for deceptively marketing “ultraprocessed foods” and then externalizing the resulting health care costs onto the public. They cite a recent Lancet review which concludes: “The totality of the evidence supports the thesis that displacement of long-established dietary patterns by ultra-processed foods is a key driver of the...

/ December 3, 2025
Illustration of a woman lying in bed with labels pointing to her, indicating symptoms: fatigue, unrefreshing sleep, cognitive impairment, post-exertional malaise, and orthostatic intolerance. An image of a house is shown to the right.

A New Test for Chronic Fatigue Syndrome?

The headline reads, “Breakthrough blood test finally confirms Chronic Fatigue Syndrome.” As you might imagine, the story is far more complicated than that. Let’s start with some background of chronic fatigue syndrome, also called myalgic encephalomyelitis (ME/CFS). As the name implies, it is a syndrome, meaning a collection of symptoms with a typical natural history – CFS is characterized by severe debilitating...

/ November 26, 2025