09/02/2026
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• Explainique >
Two people with diabetes can feel completely different and both be in trouble. One is shaky and sweating. The other is thirsty and exhausted.
Your brain runs almost entirely on glucose and cannot store any, so it depends on a steady supply arriving in your blood. When blood sugar drops too low, your brain has minutes of fuel left. Your body releases adrenaline to force sugar back into circulation, and that is the shaking, the sweating and the racing heart. Ignored, it becomes confusion, slurred speech and loss of consciousness.
When blood sugar runs too high, your kidneys spill the excess into your urine and water follows it out. That is the constant thirst, the frequent urination, the fatigue and the blurred vision, and it builds over hours and days rather than minutes. 🧠⚡
If you recognise low blood sugar in yourself, treat it straight away with fast-acting sugar such as juice or glucose tablets. If someone is confused, cannot swallow, or is unconscious, do not put anything in their mouth. Call emergency services immediately. Very high blood sugar can also become an emergency, so persistent vomiting, deep rapid breathing or drowsiness needs urgent care rather than waiting it out.
