Impact of Extreme Heat on Mental Health and Cognitive Function

Extreme Heat’s Impact on Cognitive Function and Mental Health
Key Takeaways:

• Extreme heat impairs cognitive function and may worsen neurological and psychiatric disorders such as Alzheimer’s and schizophrenia.
• Cognitive performance declines at around 79 degrees Fahrenheit.
• People with preexisting conditions or on medications that affect heat regulation are more vulnerable to heat-related health issues.
  Summary:
  Extreme heat is increasingly affecting parts of the U.S. and the world, posing risks beyond heat-related illnesses by also impairing brain function. According to a commentary in The Lancet Neurology, rising temperatures disrupt the nervous system and exacerbate disorders like Alzheimer’s and schizophrenia. Studies indicate cognitive performance starts to drop at around 79 degrees. Reasons for this include potential reductions in parasympathetic nervous system activity and blood oxygen saturation during high temperatures.
  Expert Insights:
  Dr. Kimon Bekelis emphasizes the unclear connection between heat and cognitive decline but suggests it may relate to neurotransmitter activity. He advises monitoring mental health during heatwaves as conditions like depression and anxiety can worsen. Medications like antipsychotics and disabilities (e.g., spinal cord injuries) further complicate heat regulation.
  Protection Tips:
  To mitigate heat effects, stay in air-conditioned places, stay hydrated, and consider cooling vests if you have thermal regulation issues. Dr. Jun Wu highlights the need for better access to cooling shelters and suggests policy changes, like planting trees and using reflective roofing, to reduce heat-related health risks.
  What This Means For You:
  Protect yourself by staying cool, hydrated, and mindful of your mental health, especially if you have conditions or medications that impact heat regulation.