- CBD or THC? Cannabis Product Labels Often Mislead, Study Finds
- AHA News: Straight Answers to Common Questions About COVID-19 Vaccines
- U.S. Health Agencies Call for Pause in J&J COVID Vaccine After 6 People Develop Clots
- Therapeutic Cancer Vaccine Shows Promise Against Multiple Tumor Types
- Health Highlights: April 13, 2021
- Newborns Won’t Get COVID Through Infected Mom’s Breast Milk: Study
- Physically Active at Work? It’s Not as Healthy as Leisure Exercise
- Americans Are Eating Less Healthily Everywhere, Except at School
- U.K. Variant Won’t Trigger More Severe COVID, Studies Find
- FDA Approves First AI Tool to Boost Colonoscopy Accuracy
Why Watching TV Sports Increases Heart Attacks

MONDAY, Nov. 16Reduced blood flow to the heart may help explain why men who’ve had a heart attack are at increased risk for another while watching exciting sporting events, Chinese researchers report.
The study included 38 male heart attack survivors who watched live broadcasts of Olympic Games competitions or entertainment television programs. While the men watched the shows, their coronary artery blood flow to the heart was assessed by ST-segment analysis using continuous 12-lead electrocardiography, blood pressure monitoring and heart rate measurement.
Overall, blood flow to the heart was generally stable. But when the men watched an exciting sporting event, blood pressure increased, heart rate variability decreased, and platelet aggregation (the building blocks of blood clots) increased. All these factors increase the risk of heart attack, the study authors noted.
The study was to be presented Monday at the American Heart Association’s annual meeting in Orlando, Fla.
More information
The U.S. National Heart, Lung, and Blood Institute has more about heart attack.
Source: HealthDay