Extreme Temperatures and Your Brain

Why Love Doesn’t Determine Your Worth

July 2, 2026

Published by Dina Hejazi on July 6, 2026

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⚠ MENTAL HEALTH ADVISORY ⚠

Heat Advisory

Why rising temperatures affect more than your body

What Is Heat Irritability?

heat irritability

/hiːt ˌɪr-ɪ-tə-ˈbɪl-ɪ-ti/ · noun · informal

A short fuse, restlessness, or emotional flooding that shows up specifically when the body is overheated, not a diagnosis, but a real, physiologically-driven pattern where discomfort gets misread by the brain as threat or frustration.

In a sentence: “I know I was short with you at dinner, that was heat irritability talking, not how I actually feel about you.”

SEE ALSO: heat fatigue  ·  thermal stress response  ·  summer burnout

Did You Know?

Emergency room visits for mental health concerns can rise up to 10% during heat waves lasting three days or more.

            THAT MEANS YOU'RE NOT IMAGINING IT. IT'S BIOLOGICAL.
          

THE SCIENCE BEHIND HEAT IRRITABILITY

MOOD
REACTIVITY

Your brain is working overtime. It’s spending energy cooling your body down, which leaves less in the tank for patience, focus, and staying calm.

Medication and heat don’t mix. Certain medications can heighten the risk of heat-related issues such as antidepressants.

It influences your serotonin. Some research links higher temperatures to shifts in the neurotransmitter that helps regulate mood, especially for those already managing depression.

ADVISORY SELF-CHECK

Check off what’s true for you this week:

I’ve snapped at someone over something small this week

My sleep has been noticeably worse

I’ve felt foggy or unusually unfocused

I’ve skipped therapy, meds, or my usual coping habits because the heat made it harder

Two or more? That means your nervous system is under a real physiological load caused by heat.

What Should I Do If This is Me?

01 — Hydrate before you feel thirsty. Dehydration alone can worsen irritability.

02 — Protect your sleep environment first, make sure you’re in a cool and relaxed space.

03 — Name it before you judge it: “I’m hot and depleted,” not “I’m a bad, impatient person.”

04 — Give the people around you the same grace, they’re likely running the same deficit.

If this summer’s heat has been sitting on your chest, that’s worth paying attention to, not pushing through. You don’t have to do it alone, let us help.