Boston Marathon Runner Faces Extreme UV Index on Race Day
Boston Marathon Runner Faces Extreme UV Index on Race Day
US · Published Apr 5, 2026
The Boston Marathon is expected to take place under conditions of extreme UV index levels, posing risks to runners.
Dr. Michael Holick, an 80-year-old endocrinologist with prostate cancer, is participating to inspire others and promote exercise.
Runners are advised to take precautions such as applying sunscreen and staying hydrated to protect against UV exposure and heat-related illnesses.
Extreme UV levels pose health risks
The 2026 Boston Marathon is anticipated to occur under conditions of extreme UV index levels, presenting significant health risks to its 30,000 participants. Among them is Dr. Michael Holick, an 80-year-old endocrinologist battling stage III prostate cancer, who is running his third consecutive marathon to inspire young patients with Hypermobile Ehlers-Danlos syndrome and encourage older adults to embrace exercise.
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