As heatwave conditions continue to intensify across several parts of India, medical experts are advising people to reassess their daily water intake to prevent dehydration and heat-related illnesses. Rising temperatures, combined with high humidity in many regions, are increasing the risk of heat exhaustion and heat stroke, particularly among vulnerable groups such as the elderly, children, outdoor workers, and individuals with chronic health conditions. Doctors say that hydration plays a critical role in maintaining body temperature and preventing complications during extreme heat.

According to Dr. Pankaj Relan, Senior Consultant in Internal Medicine at Max Super Speciality Hospital, Vaishali, the commonly recommended guideline of eight glasses of water per day may not always be sufficient during a severe heatwave. He explained that the body loses significantly more fluids through sweat when temperatures rise, and this loss must be compensated adequately. Dr. Relan noted that hydration needs vary depending on weather conditions, humidity levels, age, physical activity, and underlying medical conditions, making a fixed rule less effective during extreme weather.

The doctor further highlighted that individuals often underestimate dehydration because thirst is not an early warning sign. By the time a person feels thirsty, mild dehydration may already have set in. Early symptoms can include fatigue, headaches, dizziness, dry mouth, muscle cramps, and darker-than-normal urine. He added that people who spend extended periods outdoors or engage in physical activity are at a higher risk and may require increased fluid intake throughout the day.

Also Read: Doctors Recommend Low-Intensity Cardio Exercises During Heatwave Conditions

While emphasizing the importance of drinking more fluids, Dr. Relan also cautioned against excessive water consumption in a short period. Overhydration can dilute sodium levels in the body and lead to electrolyte imbalances, which may be harmful. He advised that water intake should be distributed evenly throughout the day rather than consumed in large quantities at once. In addition to plain water, fluids such as coconut water, lemon water, and buttermilk can help restore essential electrolytes lost through sweating.

Dr. Relan also recommended dietary and lifestyle measures to support hydration during heatwaves. He suggested limiting alcohol, caffeine, and sugary beverages, as these can contribute to dehydration. Including water-rich foods such as watermelon, cucumber, oranges, and yoghurt can further support fluid balance in the body. He also advised that individuals with kidney disease, heart conditions, or those taking diuretic medications should consult a doctor before significantly increasing water intake, as hydration needs must be personalised. He concluded that listening to the body’s signals and maintaining steady hydration throughout the day is the most effective way to reduce the risk of heat-related illnesses.

Also Read: Experts Recommend Electrolytes Alongside Water During Severe Heatwave Conditions