In February 1945, Franklin Delano Roosevelt, then U.S. president, arrived at the Yalta Conference to negotiate the post-war future of Europe alongside Winston Churchill and Joseph Stalin. The American president appeared visibly exhausted, lethargic and physically frail. Behind those images lay a silent medical crisis. Roosevelt’s blood pressure had reached around 260/150 mm Hg before the conference. Only weeks later, on April 12, 1945, Roosevelt collapsed at Warm Springs, Georgia, after complaining of a severe headache. His blood pressure reportedly exceeded 300/190 mm Hg before he died of a massive cerebral haemorrhage at the age of 63. Today, such readings would trigger immediate intensive care management. Yet Roosevelt’s physicians did not aggressively attempt to reduce his blood pressure.

Earlier medical thinking

The reason reflected the medical thinking of the era. Until the middle of the 20th century, many physicians did not consider hypertension to be a disease requiring active treatment. Elevated blood pressure was widely viewed as a natural accompaniment of ageing and a protective mechanism necessary to maintain blood flow to vital organs. In 1931, British cardiologist J.H. Hay famously remarked that “the greatest danger to a man with high blood pressure lies in its discovery because then some fool is certain to try and reduce it.” Physicians feared that lowering blood pressure could produce circulatory collapse, kidney injury or stroke.

Even in the first edition of Harrison’s Principles of Internal Medicine published in 1950, treatment recommendations remained cautious and largely symptom-driven. Therapy was generally reserved for patients who already showed overt cardiovascular complications. Part of this hesitation stemmed from the fact that medicine had few reliable treatments. Available approaches included sedatives, prolonged bed rest, severe salt restriction and radical surgeries such as sympathectomy. Many interventions carried serious adverse effects. But another reason was scientific uncertainty itself. Physicians still lacked convincing evidence that hypertension independently caused disease rather than merely accompanying vascular ageing.

The Framingham study

An intellectual transformation began after the Second World War, driven by the rise of epidemiology. In 1948, the Framingham Heart Study was launched in Massachusetts. It became one of the world’s largest and most influential cohort studies. Thousands of individuals were followed for decades to understand why some developed cardiovascular disease while others did not. The study fundamentally altered medicine. Researchers demonstrated that elevated blood pressure strongly predicted stroke, coronary artery disease, heart failure and kidney damage even among apparently healthy individuals. Hypertension emerged as a major independent cardiovascular risk factor. The Framingham study also transformed the philosophy of medicine itself. Physicians increasingly realised that chronic diseases evolved silently, driven by measurable risk factors, years before symptoms appeared. Blood pressure, cholesterol, smoking and diabetes became central to a new preventive framework in medicine. Modern preventive cardiology emerged from this transition.

The veterans trial

Despite Framingham’s observations, many physicians remained sceptical. Observational evidence alone did not fully convince the medical community. The decisive turning point came in 1967 through the landmark Veterans Administration Cooperative Study. This randomised clinical trial demonstrated that actively lowering blood pressure significantly reduced strokes, heart failure and kidney damage among patients with severe hypertension. Physicians possessed convincing experimental evidence through the study that treatment itself altered survival. The Veterans study changed the trajectory of cardiovascular medicine. Hypertension could no longer be dismissed as a harmless consequence of ageing. The debate gradually shifted from “Should hypertension be treated?” to “How early should treatment begin?”

Over subsequent years, repeated clinical trials, epidemiological studies, and the growing science of evidence synthesis consistently reinforced the same conclusion. Even though the precise cause of most hypertension remained unknown, the cumulative evidence clearly showed that elevated blood pressure silently damaged blood vessels, kidneys, the retina, the heart and the brain over time. Medicine increasingly accepted hypertension as a disease entity in its own right.

JNC era

The final consolidation of medical consensus arrived in 1977 with the publication of the first report of the Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure, commonly known as JNC. Hypertension was systematically classified, monitored, and managed in accordance with standardised national recommendations. The report helped unify physicians, researchers and public health systems around a common framework for detection and treatment. The JNC recommendations evolved over subsequent decades as more evidence accumulated. Treatment thresholds became progressively stricter. Greater emphasis was placed on systolic blood pressure, early detection and long-term prevention. What began as a controversial physiological observation gradually became one of the most important measurable diseases in preventive medicine.

What remains puzzling

Yet hypertension continues to retain an important scientific mystery. Even today, most patients (>90%) are classified as having “essential hypertension,” meaning no single identifiable cause can be pinpointed. Medicine recognises multiple risk factors, including genetics, obesity, excess salt intake, stress, alcohol, ageing, and sedentary lifestyles. But the precise biological mechanisms through which these factors interact remain incompletely understood. In many ways, hypertension became recognised as a disease not because medicine fully understood its cause, but because epidemiology, clinical trials and evidence synthesis repeatedly demonstrated its devastating long-term consequences. This represented a major maturation of modern medicine itself. Diseases no longer required a single visible cause to justify intervention. Statistical evidence, reproducible outcomes and longitudinal population studies became sufficient to guide public health action.

The progress so far

Roosevelt’s represents a textbook case of untreated hypertension progressing to target organ failure and death from stroke. In less than a century since his death, humanity moved from therapeutic helplessness and scientific uncertainty to highly effective blood pressure control using inexpensive medicines with relatively few side effects. Today, antihypertensive drugs are available even in small primary health centres, sub-centres and remote rural clinics across much of the world. And yet, a vast majority in India continue to remain untreated or under-treated, signalling the need for better public health interventions.

Had modern antihypertensive therapy and contemporary cardiovascular care been available to Franklin D. Roosevelt though, the political fate of Eastern Europe, negotiated in the shadow of his failing health, may have unfolded differently at the Yalta conference.

(Dr. C. Aravinda is an academic and public health physician. The views expressed are personal. aravindaaiimsjr10@hotmail.com)

Published – May 19, 2026 05:52 pm IST

High blood pressure, also known as hypertension, is often called the “silent killer” because it often goes unnoticed until it triggers severe health complications such as strokes, heart attacks, kidney damage, and heart failure. According to medical standards, the reading on a doctor’s BP monitor going above 140/90 accounts for hypertension. The World Health Organization (WHO) released its first-ever report on the global impact of hypertension this Tuesday, highlighting the devastating consequences of this widespread, yet often neglected condition.

The WHO report reveals that hypertension affects one in three adults worldwide, making it a significant global health concern. It is a condition that knows no boundaries, affecting people across age groups and geographical regions. The number of people living with hypertension has doubled from 650 million in 1990 to a staggering 1.3 billion in 2019, with nearly half of these individuals unaware of their condition.

According to the WHO report, nearly four out of five people with hypertension are inadequately treated. However, scaling up coverage could avert 76 million deaths between 2023 and 2050. The report reveals a doubling of hypertension cases from 1990 to 2019, with over three-quarters of affected adults residing in low- and middle-income countries.

“Diagnosing and treating hypertension is the simplest and most basic care even a nurse could give in the absence of a doctor at a primary health care facility, and there is no excuse for any country failing to scale this up,“ said Bente Mikkelsen, Director of Noncommunicable Diseases, WHO, in an online press conference on Tuesday during the release of the report.

India‘s BP Performance

Recent research on hypertension in India paints a similar picture. A recent systematic review published in The Lancet Regional Health, Southeast Asia and a community study published in Cureus highlights the growing prevalence of hypertension in the country, particularly among younger adults and those from lower socioeconomic backgrounds. The research papers emphasise that a significant portion of hypertensive individuals in India remain undiagnosed. The lack of awareness about the condition and limited access to healthcare services are critical factors in this trend.

The systematic review examined how well hypertension, or high blood pressure, is managed in India from 2001 to 2020. They found that only about 22.5% of people with high blood pressure had it under control in the most recent period from 2016 to 2020. The Cureus study showed that the number of people with high blood pressure in India increased from 20.4% to 22.8%, especially among those aged 15-49. While more cases are being found through screening, many people (around 58%) with high blood pressure do not know they have it, especially men, those with less education and money, tribal communities, and people living in rural areas. Even when people know they have high blood pressure, six out of ten do not start treatment, so there is a need for interventions to change their health-seeking behaviour.

“The WHO report accurately reflects on hypertension as a public health problem, a significant issue in India,“ said Saurav Basu, Assistant Professor, Public Health Foundation of India, and author of the Cureus study. Through their extensive community surveys, such as the National Family Health Survey (NFHS) and Noncommunicable Diseases (NCD) surveys, researchers such as Dr. Basu have also found what WHO has reported. “We know that many people in India with high blood pressure don’t know they have it, and even when they do, they often don’t receive proper treatment, leading to poorly managed high blood pressure,“ he added. 

Lifestyle matters

The WHO report underscores the role of modifiable risk factors in hypertension. Unhealthy lifestyle choices, such as a high-salt diet, lack of physical activity, and excessive alcohol consumption, increase hypertension risk. This echoes the findings of the Indian research, which also highlights the impact of lifestyle factors on hypertension prevalence. Sedentary lifestyles, poor dietary choices, and high stress levels contribute to the rising incidence of hypertension in India.

The treatment gaps identified in the WHO report and the Indian studies have dire consequences, as uncontrolled hypertension can lead to life-threatening conditions. The WHO report emphasises the importance of lifestyle changes in lowering blood pressure, such as adopting a healthier diet, quitting tobacco, and increasing physical activity. It also highlights the role of affordable, widely available medications in effectively managing hypertension.

“There have been studies several years ago that showed that the average blood pressures across countries were tightly linked to the salt intake,“ said Tom Frieden, CEO of Resolve To Save Lives, a US-based NGO advocating cardiovascular disease prevention. “What we now see in some countries is that as the food gets unhealthier, we also see a big increase in the rate of hypertension – so what we need here is not just access to care but also promotion of healthier lifestyle to curb NCDs,“ he said during the press briefing.

Way Forward For India

The Indian research papers complement these perspectives by stressing the need for improved hypertension control strategies. They reveal that despite awareness of their hypertension diagnosis, a significant portion of patients in India do not initiate antihypertensive treatment. This indicates challenges in treatment-seeking behaviour and the need for educational and behavioural interventions. Despite a significant four-fold improvement in control rates over two decades, the rising prevalence of hypertension, especially among the poor and young adults, necessitates  reevaluating national strategies. According to the WHO report, regional disparities are evident among different countries. However, WHO and Dr Frieden believe India does well.

“The government of India follows WHO‘s guidelines in remarkably expanding the heart care programs throughout the country among the health and wellness centres under community control,“ Dr Frieden said. However, the Cureus study identifies regional disparities within India. For instance, southern States such as Kerala and Tamil Nadu show better control rates than the western and north/northeastern – States in India. 

Moreover, medication adherence is crucial for control. However, issues like forgetfulness in the elderly to take medication, medication availability, and affordability pose barriers. Limited research exists on lifestyle and risk factors, with social determinants such as education and caste systems playing a role. This calls for better data collection and evidence-based policies to address uncontrolled hypertension in India.

“Managing cases of high blood pressure that don’t respond well to treatment, especially when doctors hesitate to take action in primary care settings, is also a problem,“ Dr Basu said.. “Additionally, ensuring that people take their medications over the long term and close monitoring of complications related to high blood pressure, especially in those with diabetes, are major challenges in India.“ Consequently, the National Programme for Noncommunicable Diseases aims to provide proper care for 70 million people with high blood pressure in India, and its work amid the WHO report release is crucial, according to Dr Basu.

The economic aspect of hypertension management is a vital focus area of the WHO report. It underscores that prevention, early detection, and effective management of hypertension are among the most cost-effective interventions. “The economic benefits of improved hypertension treatment programmes far outweigh the costs,“ said Dr. Mikkelsen. This is a crucial point for India, where healthcare accessibility and affordability are significant concerns for people experiencing poverty.

(Vijay Shankar Balakrishnan is a freelance journalist based in Ludwigshafen am Rhein, Germany.)