26/05/2026
Before even considering antidepressants, 62% of people mistake hunger and thirst signals. So before you reach for the crisps 🥵
We are currently in the midst of a heatwave, so If you suddenly find yourself craving snacks or feeling a hollow hunger, your brain might be playing a trick on you.
A landmark study in Physiology & Behavior found that 62% of the time, people mistake thirst for hunger, reaching for food when their body is actually begging for water.
This neurological mix-up can lead to heat exhaustion as the brains wires get crossed:
* Shared Brain Space: Both hunger and thirst are regulated by the exact same control center: your hypothalamus.
* Twin Symptoms: Mild dehydration mimics hunger perfectly. It causes low energy, brain fog, irritability, and a hollow stomach.
* The Food Trap: Your brain knows food contains water. When dehydrated, it triggers a food craving to desperately pull fluid from whatever you eat.
⚠️ The Antidepressant Zone
If you take antidepressants (like SSRIs, SNRIs, or TCAs), this heatwave requires extra caution. These medications create a double-whammy side effect:
1. They blunt your thirst: They disrupt your internal thermostat, and can blunt thirst even when your body is overheating.
1. They amp up hunger: They can block specific receptors, turning off your “I’m full” switch and triggering carbohydrate cravings.
When it is blazing hot outside, a food craving is very often hidden dehydration.
💧 The Heatwave Rule
Don’t trust your appetite right now. Next time you feel an unexpected craving, use the 20-Minute Rule:
* Drink a large glass of water or use an electrolyte.
* Wait 20 minutes for your hypothalamus to register the fluid.
* If you are still genuinely hungry, eat. If the craving vanished, your body was desperate for cooling hydration.