How Record Heat is Creating a Silent Health Crisis in India | Quick Take with Smita Prakash

Added: 2026-05-15

[00:00:00]This Summer Many Indians Believe They Know How to Deal with Heat. Stay in dose, drink water, avoid the afternoon sun. But what if that is not enough. What If the Real Danger Isn't Just Stepping Out at 2:00 P.M. But Something Far More [Music] Silent Building Inside the Body Long Before the Collapse. The Biggest Risk This Summer May Not Be Heat Stroke Alone. It may be heat stress.

[00:00:22][Music] Let's understand what's happening. This is Quick Take Your Quick Guide. I am Smita Prakash.

[00:00:28][MUSIC] Heat stress isn't always dramatic. It's not always someone fainting on the road in 45 degree centigrade heat. In fact, many doctors say many heat related illnesses begin quietly.

[00:00:46][Music] Placing stress on the heart, kidneys, and brain. Take a simple example. A 62 year old man in Delhi goes for a routine morning walk. Not in the peak afternoon heat Just around 8:00 AM Within minutes he feels [music] severe sweating And then suddenly the sweating stops That is a [music] warning sign The body's cooling system is beginning to fail Soon comes nausea Breathlessness Confusion Then collapse His body was already under strain Dehydration Falling blood pressure Heat stress Early organ damage [music] This is heat stress It builds quietly and it escalates rapidly. So what is happening inside the body? When temperatures rise, the body tries to cool itself by sending more blood to the skin and producing [music] sweat. But that cooling comes at a cost. The Heart Works Harder. Medical experts estimate heart rate can rise significantly as body temperature rises. At [music] the same time sweating causes fluid loss. Blood volume drops, blood pressure falls, blood vessels widen. [Music] That combination can strain vital organs, especially the heart, kidneys, and brain. And this is where the danger becomes invisible. [Music] Many cases are never recorded as heat illness. They appear instead of [music] heart attacks, kidney failure, strokes, respiratory distress, heat was the trigger.

[00:02:15]But it is rarely identified in the cause.

[00:02:19]Now look at India. A major 2024 study found strong [music] evidence that longer and more intense heat waves increase daily mortality in India. According to the 2025 Landsat Countdown report, Indians faced nearly 20 heat wave days on an average [music] in 2024 with climate change adding around six extra dangerous heat days per person.

[00:02:44]And the economic damage is huge. [Music] India lost an estimated 247 billion potential labor hours in 2024 due to extreme heat with income losses estimated at around $194 billion. But it's not only [Music] temperature, it's humidity. Humidity prevents sweat from evaporating efficiently. That means the body can't cool itself properly. So even 38° with high humidity can feel more dangerous than 42° in dry heat. That is why many experts are now worried about oppressive heat waves, which are high temperatures combined with high humidity, especially across North and coastal India. Who is more at risk? The elderly people with diabetes. Dose with heart disease and kidney problems, pregnant women, outdoor workers, children. Even 15 to 30 minutes [music] of exposure can become risky for vulnerable people. There are hidden dangers too. Some medicines increase [music] dehydration.

[00:03:52]Diabetics may sweat less. Pregnant women may face reduced blood flow to the placenta. So this is not only about extreme [music] exposure. It's about everyday exposure becoming dangerous. And the [music] effects go beyond health.

[00:04:08]Productivity falls, fatigue rises, mistakes increase, road and workplace accidents go up, mental stress, irritability and aggression also rise during prolong heat spells. We often treat heat as discomfort. It's Not Discomfort Anymore. It is a public health [music] emergency. India has responded in some places. Ahmedabad launched South Asia's first city-level heat action plan after the devastating 2010 heat wave which was linked to more than 1,300 excess deaths. Later Studies Estimated the Plan May Have Helped Avoid Around 1190 [Music] Deaths Annually in Later Years. But implementation across India remains uneven.

[00:04:53]The data is fragmented. Many heat-related deaths are still never classified as heat-related. So the crisis is underestimated [music] and what is underestimated is rarely prepared for. So, what should you do, do not rely on the time of day. Morning hours are not always safe. [Music] Hydrate regularly, not just when thirsty. Not many of us can determine that [music] We need to hydrate especially when we're busy.

[00:05:23]Reduce outdoor activity during humid and hot conditions. [Music] If you have diabetes, heart disease, or kidney issues, be extra careful. Watch for Early Warning Signs [Music] Such as dizziness, weakness, nausea, confusion, usual fatigue, reduced sweating, and do not dismiss mild symptoms, heat stress often whispers before it screens.

[00:05:47]India's entering lager, harsher summers. The question is no longer whether heat waves will come.

[00:05:53]The real question is whether we continue treating heat as an inconvenience that will pass [music] in a few weeks or start treating it as the serious health threat that it has already become. Because by the time the body gives a clear warning it may already be understrained.

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