Why Do We Get Hangry?

Why do we get hangry? Hunger doesn't just make your stomach growl — it triggers a chain reaction of stress hormones, fires up aggression circuits, and shuts down the part of your brain that stops you saying the wrong thing. In this episode, Jen and Chris are joined by Vegetology co-founder Jamie as they unpack the four biological mechanisms behind hanger — and why "sorry, I was just hungry" turns out to be a scientifically valid explanation, not an excuse. A 21-day real-world study found that hunger accounts for 37% of the variation in people's irritability and 34% of their anger levels — holding up even after controlling for age, personality, and BMI. Chris explains why the chemical signal for "I need food" and "I am under threat" are virtually identical, what neuropeptide Y has to do with aggression, and why your impulse filter goes offline before you've even noticed you're hungry. The team also covers the psychology of hanger — why environment and self-awareness play a bigger role than most people realise — and four practical things you can do that are actually grounded in the science. Timestamps 00:00 - Introduction 02:16 - How significant is hanger? The research 03:37 - Blood sugar and your brain 05:05 - Neuropeptide Y: hunger and aggression 06:00 - The prefrontal cortex goes offline 07:14 - The psychology of hanger 09:35 - What actually helps Connect & Continue Learning 🔔 Subscribe for weekly science-backed answers:    / @sothatswhypodcast   💬 What's your worst hangry moment? Tell us below — we want to know. #SoThatsWhy #Hangry #HealthScience #BloodSugar #MoodAndFood