02 Sanjay CTE.jpg
Video Ad Feedback
What is CTE and why is it tied to the NY gunman?

CTE, or chronic traumatic encephalopathy, is in the news after sources say the Midtown Manhattan gunman cited the brain disease in a suicide note. CNN's Dr. Sanjay Gupta addresses some of the questions you may have.

1:34 • Source: CNN
Health 9 videos
02 Sanjay CTE.jpg
Video Ad Feedback
What is CTE and why is it tied to the NY gunman?
1:34
Now playing
• Source: CNN
offit.jpg
Video Ad Feedback
Judge blocks HHS Secretary RFK Jr’s efforts to overhaul U.S. childhood vaccine policy
0:39
Now playing
• Source: CNN
Flovent_Thumb1.png
Video Ad Feedback
Senate investigation: drugmaker harmed patients, profited, with asthma inhaler switch
4:09
Now playing
• Source: CNN
thumb 3.jpg
Video Ad Feedback
Can I fix my frazzled attention span? Here's how my 30-day training worked
4:15
Now playing
• Source: CNN
A person poses with a bottle of Leucovorin in this illustration picture taken in Schwenksville, Pennsylvania, U.S. September 24, 2025. REUTERS/Hannah Beierr
Video Ad Feedback
FDA reverses stance on autism drug
2:53
Now playing
• Source: CNN
This image made with the Iseult Magneton 11.7 T MRI shows a brain during a magnetic resonance imaging (MRI) exam simulation at the Neurospin facilities in the Paris-Saclay Alternative Energies and Atomic Energy Commission (CEA - Commissariat a l'energie atomique et aux energies alternatives) centre in Gif-sur-Yvette, on March 22, 2024. "Iseult", the world's most powerful MRI scanner, has delivered its first images of the human brain and is expected to provide a better understanding of its functioning and of certain neurodegenerative and psychiatric diseases. The technical feat is the result of a French-German partnership which has required more than 20 years of research. (Photo by Alain JOCARD / AFP) / RESTRICTED TO EDITORIAL USE - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION (Photo by ALAIN JOCARD/AFP via Getty Images)
Video Ad Feedback
Scientists discover how 'super agers' stay mentally sharp
3:50
Now playing
• Source: CNN
houry.jpg
Video Ad Feedback
Former CDC official: 'Very concerned' about Trump's surgeon general pick
0:57
Now playing
• Source: CNN
Screenshot 2026-02-24 at 4.34.54 PM.png
Video Ad Feedback
There's a shortage of estrogen patches. A board certified gynecologist shares her advice.
5:13
Now playing
• Source: CNN
Zen Honeycutt.png
Video Ad Feedback
MAHA mom "outraged" at Trump's order on weed killer
7:18
Now playing
• Source: CNN