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By:

Quaid Najmi

4 January 2025 at 3:26:24 pm

Cold wave triggers spike in cardiac arrests

Mumbai : As winter temperatures go for a spin across the country, hospitals are witnessing a significant surge of around 25-30 pc in cardiac emergencies, a top cardiologist said.   According to Interventional Cardiologist Dr. Hemant Khemani of Apex Group of Hospitals, cold air directly affects how the heart functions.   “Low temperatures make blood vessels tighten. When the arteries narrow, blood pressure shoots up and the heart has to work harder to push the blood through the stiffened...

Cold wave triggers spike in cardiac arrests

Mumbai : As winter temperatures go for a spin across the country, hospitals are witnessing a significant surge of around 25-30 pc in cardiac emergencies, a top cardiologist said.   According to Interventional Cardiologist Dr. Hemant Khemani of Apex Group of Hospitals, cold air directly affects how the heart functions.   “Low temperatures make blood vessels tighten. When the arteries narrow, blood pressure shoots up and the heart has to work harder to push the blood through the stiffened vessels,” said Dr. Khemani.   Elaborating on the direct effects of cold air on heart functioning, he said that low temperatures make blood vessels tighten, when arteries narrow, blood pressure shoots up and the heart must work harder to push blood through stiffened vessels.   Winter also thickens the blood, increasing the likelihood of clot formation and these combined effects create a dangerous ‘demand-supply mismatch’ for oxygen, especially in people with existing heart conditions.   This trend has caused concern among cardiologists as it adds to India’s already heavy cardiovascular diseases burden – with nearly one in four deaths linked to heart and blood vessel problems.   Dr. Khemani said that sudden temperature transitions - from warm rooms to chilly outdoors - can put additional strain on the heart and risks. “This abrupt shift loads the cardiovascular system quickly, raising the risk of a sudden (cardiac) event among vulnerable individuals.”   Lifestyle Patterns Added to these are the changes in lifestyle patterns during winter month that further amplify the danger. Most people reduce physical activities, eat richer foods, and often gain weight all of which combine to raise cholesterol levels, disrupt blood-sugar balance and push up blood pressure.   Complicating matters for the heart are the social gatherings during the cold season that tends to bring higher intake of smoking and alcohol, said Dr. Khemani.   Recommending basic preventive measures, Dr. Khemani said the chest, neck and hands must be kept warm to prevent heat loss, maintain a steady body temperature and reduce the chances of sudden blood pressure spikes, a low-salt diet, home-cooked meals, shot indoor walks post-eating, adequate hydration and at least seven hours of sleep.   He warns against ignoring warning signals such as chest discomfort, breathlessness, unexplained fatigue, or sudden sweating, pointing out that “early medical care can significantly limit heart damage and improve survival.”   The rise in winter heart risks is not unique to India and even global health agencies like World Health Federation and World Health Organisation report similar patterns.   The WHF estimates that more than 20 million people die of heart-related causes each year - equal to one life lost every 1.5 seconds, and the WHO has listed heart disease as the world’s leading cause of death for five consecutive years.   Seniors affected more by winter chills  Cold weather can hit the heart at any age, but the risk is noticeably higher for men aged above  45 and in women after 55, with the highest danger curve in people over 60, and elders with co-morbidities and history of heart diseases.   “People with existing cardiac problems face greater trouble in winter as the heart has to work harder. Even those without known heart disease can sometimes experience winter heart attacks, as chilly conditions may expose hidden blockages or trigger problems due to sudden exertion, heavy meals, smoking or dehydration,” Dr. Khemani told  ‘ The Perfect Voice’ .   However, contrary to perceptions, cold-weather heart issues have no connection to the COVID-19 vaccine, nor is there any scientific evidence linking the two, he assured.

Confronting Exploitation, Colonisation, and the Fight to Survive

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On 9 August, the UN observes World Indigenous Peoples’ Day, honouring the resilience, wisdom, and cultures of Indigenous and tribal communities. It also highlights their ongoing struggles—displacement, conversion, exploitation, and erasure. More than recognition, it is a call to respect and uphold the rights of the First Peoples of the Earth.


The UN defines Indigenous peoples as communities with deep ties to ancestral lands, unique cultures, and a shared history of marginalisation. Speaking over 4,000 of the world’s 7,000 languages, they preserve knowledge crucial to biodiversity. Despite their diversity across seven regions, they face common challenges: colonisation, displacement, and cultural loss.


India is home to over 700 Scheduled Tribes (STs), or Adivasis, who make up 8.6% of the population—over 100 million people. They preserve unique languages, rituals, and nature-based spiritual systems rooted in deep ecological knowledge. While India backed the 2007 UNDRIP, it did so asserting all Indians are Indigenous in diverse ways—an inclusive view that respects cultural diversity while recognising Adivasi distinctiveness.


Colonisation deeply harmed Indigenous peoples, as empires like Britain, Spain, and France seized land and erased native cultures. In India, British rule branded tribal groups “criminal” or “backward”, justifying displacement and missionary control. Missionary schools forced children to abandon their languages, traditions, and beliefs for Western norms and Christian doctrine.


Conversion was not just religious—it was a means of control. Missionaries and colonial powers dismantled Indigenous social structures, fostering dependence on foreign institutions. Globally, the pattern repeated: Native American children in the U.S. were placed in culture-erasing boarding schools; Australia’s Stolen Generations faced similar fates; in Africa, forced conversions disrupted ancestral beliefs and communities.


The missionary presence in tribal areas, especially during colonial rule, remains one of the most contentious aspects of Indigenous history. While some offered education and healthcare, conversion often came with cultural suppression. It created a dependency on missionary institutions and distanced communities from their roots.


In India, missionary activity was widespread—especially in the Northeast and Central regions—where mass conversions to Christianity took place. Sacred sites were destroyed, traditional beliefs undermined, and tribal children sent to boarding schools where their languages and customs were mocked and replaced with foreign practices. This cultural erasure, disguised as civilisation, had lasting consequences. Missionaries used their dual roles as educators and spiritual leaders to exert political control and suppress native identities. What seemed like “charity” often concealed an agenda of cultural domination—a colonial tool used worldwide to reshape Indigenous identities through religion and education.


Indigenous communities continue to face modern forms of colonial exploitation—land dispossession, environmental damage, and economic marginalisation. Development projects such as mining, dams, and afforestation often displace them without proper consultation or compensation.


In India, tribal groups are frequently uprooted by large-scale projects like Special Economic Zones (SEZs) and hydropower schemes. The Dongria Kondh of Odisha won a rare legal victory by halting a bauxite mine on their sacred Niyamgiri Hills—but this is just one of many ongoing battles. Across the country, tribal communities still fight forced evictions from ancestral lands.


Globally, similar struggles persist. In Africa, Indigenous land is seized for oil and logging. In North America, pipelines and mining threaten sacred sites and water. In Australia, Aboriginal people continue seeking redress for stolen land. Despite these challenges, Indigenous peoples remain resilient, defending their culture and identity. Their territories—home to around 80% of the world’s biodiversity—are vital to global ecological survival. The fight for the environment is inseparable from the struggle for Indigenous land rights.


The United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP), adopted in 2007, affirms Indigenous peoples’ rights to self-determination, cultural expression, and land ownership. While some countries have made progress, implementation remains slow. In India, the Ministry of Tribal Affairs and the Forest Rights Act (2006) aim to empower tribal communities, though enforcement is uneven. Tribal resistance continues to fuel the fight for land and cultural rights, as Indigenous voices demand respect for their heritage and sovereignty. Globally, the movement is growing—communities in Canada, Brazil, and New Zealand lead protests against resource exploitation. From Standing Rock to the Amazon, Indigenous groups are pushing back against land commodification.


(The author is Assistant Professor Institute of Management Studies Banaras Hindu University Varanasi.)

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