It is 3:45 PM on a Thursday. You are sitting at your desk, and you have just realised that you hate your job, your flat is disgusting, your friends secretly despise you, and humanity is doomed.
You feel a knot of bitter despair in your throat. You are on the verge of sending a frantic message or having a complete emotional breakdown over a slightly curt email from a colleague.
Then, someone hands you half a peanut butter bagel. You eat it begrudgingly. Ten minutes later, you blink, look around, and think: "Wait... actually, my job is fine, and my friends are great. What just happened?!"
You weren't having an existential crisis. You were experiencing The Glucose Freefall.
1. The Interoception Disconnect
Interoception is your brain's internal sensor for bodily states: hunger, thirst, heart rate, bladder fullness, and fatigue. In ADHD minds—especially those taking stimulant medications—interoceptive awareness is severely dampened.
You don't get the polite stomach rumbles that notify normal people it's time for lunch. Instead, you enter a state of total hyperfocus, work for seven hours straight without a sip of water or a single calorie, and remain completely unaware that your body is in physiological famine.
2. What Happens When the Prefrontal Cortex Starves
Your prefrontal cortex—the part of the brain responsible for emotional regulation, patience, perspective, and impulse control—is an energy hog. It runs almost exclusively on glucose.
When blood sugar plummets, the prefrontal cortex essentially browns out. Your primitive limbic system (the amygdala) takes over the driver's seat. Minor inconveniences are decoded as life-or-death emergencies. Small frustrations morph into venomous rage or deep, weeping hopelessness.
"Before you diagnose yourself with existential depression or total career burnout, make sure you aren't just a toddler who desperately needs a snack and a nap."
• The HALT Check: Whenever an overwhelming wave of emotional distress strikes, stop and ask: Am I Hungry, Angry, Lonely, or Tired?
• Liquid Calories for Sensory Aversion: When you are too executive-fried to chew food, chewing feels like chewing leather. Keep ready-to-drink protein shakes, smoothies, or drinkable yogurts on hand.
• The Emergency Sugar Rule: Keep a packet of fruit chews or juice boxes at your desk. In an acute crash, fast glucose absorbs in 5 minutes and buys your brain time to cook real food.
3. Feed the Machine First
Treat your emotional state with biological humility. Never analyse the meaning of your life on an empty stomach. Feed the biological vessel first, wait twenty minutes, and only then evaluate your feelings.