Beat the heat with fluids

Under normal circumstances, humans maintain a body temperature of 98.6 degrees Fahrenheit. When subjected to extreme heat, the body attempts to maintain this ideal temperature by varying blood circulation and perspiring.

When the internal body temperature rises above 104 degrees Fahrenheit, vital organs are at risk, says Dr N P Singh of the Maulana Azad Medical College. Symptoms of heat stroke include drowsiness, coma and cardio-respiratory problems.

Elderly are at a greater risk. Heat-stroke patients should be shifted to a cool place, preferably one that is air-conditioned.

Fluids not alcohol and caffeine like water and fruit juices should be offered.