05/05/2026
For many people living with MS, summer heat is more than uncomfortable — research shows it can genuinely affect how the body functions. Heat intolerance affects 60–80% of people with MS, and even a small rise in body temperature can temporarily worsen symptoms like fatigue, mobility issues, or vision changes.This is known as Uhthoff’s Phenomenon, and it’s something the iConquerMS community — part of Accelerated Cure Project for MS — is actively helping researchers better understand through ongoing data collection.
The good news? There’s a lot you can do. From planning errands during cooler times of day to staying hydrated, using cooling products, and adjusting exercise routines, small changes can make a real difference. And if symptoms do flare up, know they’re usually temporary and tend to improve once the body cools down.
Read “Heat Hits Hard” to learn more: https://www.acceleratedcure.org/heat-hits-hard/