New Delhi, June 4 -- If you live with diabetes, a heatwave isn't just uncomfortable, it's a genuine medical risk, and most people underestimate it. High blood sugar makes you urinate more, so you lose fluid faster than someone without diabetes. Dehydration then concentrates the sugar in your blood, pushing it even higher, in a loop that can spiral quickly in extreme heat. On top of this, diabetes can quietly damage the nerves that control sweating. If your body can't sweat properly, it can't cool itself, and heat builds dangerously without the usual warning of feeling drenched.

5 warning signs you should never ignore this summer

"Every summer, my clinic sees a predictable spike in patients whose blood sugar becomes harder to control. Th...