My son can be sitting still on the couch, hasn’t eaten in two hours, and his Dexcom will still climb 40 points in the middle of a boss fight. The first few times it happened I assumed he’d snuck a snack. He hadn’t. What was actually happening has a name, and once you understand it, those “unexplained” gaming highs stop being a mystery — and stop tempting you to over-correct them.
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It’s Not the Snacking. It’s Adrenaline.
When a kid gets excited or keyed up — a close race, a boss fight, a match they’re about to lose — their body responds exactly the way it would to any other stressful or thrilling moment: it releases stress hormones, adrenaline (epinephrine) first among them. According to MSU Extension, which covers this specifically for kids managing diabetes, that adrenaline signals the liver to release stored glucose (glycogen) into the bloodstream. Diabetes nurse clinician Awilda Valdes puts it simply: “when we get excited, our bodies are wired to respond by increasing output of certain stress hormones, including adrenaline,” and for a kid with T1D, that means blood sugar can climb with zero food involved.
This isn’t a theory parents came up with to explain away weird numbers — it’s documented. A pilot study on video game playing and glucose metabolism in children with T1D compared a video-game session against a reading session (each followed by rest) and found gaming affected glucose differently than the calmer activity. And the same stress-hormone mechanism shows up in a much more dramatic form in competitive sports: some T1D athletes report blood sugar jumping from around 100 to 300 mg/dL in the seconds before a race even starts — before a single muscle has moved — purely from the adrenaline of anticipation. A video game controller can trigger a smaller version of the exact same response.
How to Tell an Adrenaline Spike From a Real High
The practical question isn’t “is this real” — the number on the meter is real either way. It’s “what caused it, and what does that mean for how I treat it.” A few things that help us tell the difference:
- Timing. If the rise lines up with an intense moment in the game — not a snack, not a meal bolus wearing off wrong — adrenaline is the likely driver.
- Speed. Adrenaline-driven rises tend to happen fast, often faster than food alone would explain, and can level off or start coming down once the exciting moment passes and your kid calms down.
- No insulin-on-board explanation. If there’s no recent carbs and no missed bolus to account for it, and your kid has been sitting there the whole time, the stress-hormone explanation fits.
The Over-Correction Trap
This is the part that actually matters for day-to-day management: adrenaline-driven highs are often temporary. The glucose the liver just dumped into the bloodstream isn’t going to keep climbing forever — once the excitement fades, insulin sensitivity tends to bounce back too, sometimes sharply. If you correct a gaming-adrenaline spike the same way you’d correct a food-driven high, there’s a real risk of stacking insulin on top of a number that was already about to come down on its own, and landing low twenty or thirty minutes later, right as the excitement wears off.
What’s worked for us: if the CGM trend arrow is still pointing up and the game session isn’t over, we wait and recheck in 15–20 minutes before doing a full correction. If he’s on a pump, a small temporary basal increase during a known high-stakes gaming session (a tournament, a big multiplayer match) can take the edge off without the overshoot-and-crash pattern a full bolus correction risks. Always run anything like this by your endocrinologist first — this is what works for our kid, not a substitute for your own care team’s guidance.
Where This Fits Into Screen Time, Generally
None of this is a reason to cut gaming out — it’s a reason to understand what’s happening so you’re not chasing a mystery number. The general pediatric screen-time guidance (the American Academy of Pediatrics and CDC both land around 1–2 hours of recreational screen time a day, plus regular movement breaks) is good practice for every kid, T1D or not. For us, it’s less about a hard time limit and more about noticing patterns: which games run his numbers up, whether long sessions without a break correlate with bigger swings, and building that into how we think about pre-bolusing or basal adjustments on gaming-heavy days.
The Bottom Line
A blood sugar spike during an intense game isn’t a mystery, and it isn’t a sign your kid snuck food or that something’s wrong with their pump. It’s adrenaline doing exactly what adrenaline does. Once you can recognize the pattern, you can respond to it calmly — a little patience and a smaller correction, instead of a full one chasing a number that was already on its way back down.
