Extreme heat is a direct threat to the brain. When the body cannot shed heat fast enough, core temperature climbs and heat stroke can follow. This medical emergency leads to overheated blood damaged neurons and can result in cognitive impairment. People already living with a brain injury are especially vulnerable, as damaged temperature-regulating systems make it harder to cool down and easier to slip into confusion, seizures, or worsening symptoms.

Prevention, though, is straightforward and quite simple: hydrate constantly, rest in shade or air conditioning, avoid exertion during the hottest time of the day, and wear light clothing. Most importantly, treat dizziness, nausea, or confusion as warning signs and call 911 immediately when there is sudden confusion or a collapse.

Government response has been uneven. The Occupational Safety and Health Administration’s original Heat National Emphasis Program expired in April 2026 and was replaced by a revised, expanded federal program running through April 2031. H.R. 6213 and S. 4427 would prevent the Department of Labor from putting a national heat safety rule into action.

On July 21, 2026, the House Education and Workforce Committee advanced the Heat Workforce Standards Act in an 18-15 party-line vote to block OSHA from finalizing such a rule. Opposing it, Rep. Alma Adams (NC) challenged colleagues to “stack boxes on Independence Avenue for a few hours without water and without shade.” In support of the bill, Rep. Tim Walberg (MI) argued that it isn’t fair to impose a “one-size-fits-all” federal mandate across very different industries, climates, and workplace environments. Though all states have extreme temperature concerns, as can be attested in the Northeast right now, it is notable that the opposition comes from not only party lines, but also from regions of the country that often have heat waves.