@humanscope3d: 🧅 WHY do onions make you CRY?! 😭 You're not even sad… but one slice of an onion and suddenly your eyes are watering! Here's the crazy part: cutting an onion triggers a real CHEMICAL REACTION! 🧪 An invisible irritant reaches your eyes, and your brain activates a protective tear reflex. 👁️💧 Scientists have even filmed the tiny droplets released when onions are sliced! 🔬 Watch what's happening inside your body in cinematic 3D! Does cutting onions make YOU cry? 👇#StomachGrowling #HumanBodyFacts #GutFacts #ScienceTok #DigestiveSystem #LearnOnTikTok #Dizziness

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Wednesday 04 November 2026 12:37:41 GMT