A landmark 2018 study by Massachusetts Institute of Technology, published in Science, found that falsehoods on the microblogging site Twitter (now X) spread significantly faster, deeper, and more broadly than the truth.

Analysing data from 2006–17, researchers reported that false news was 70 per cent more likely to be retweeted and reached people up to six times faster than truthful stories. In an era of cheap data and cheap credulity, the old saying “A lie can travel halfway around the world while the truth is putting on its shoes” seems empirically validated. False health claims do not merely compete with science, they also outpace it. India is particularly vulnerable, given the gaps in health literacy. Patients frequently come to me clutching their chest, demanding immediate surgery because a WhatsApp forward has convinced them their symptoms are fatal. In nearly 60 per cent of such cases, the symptoms improve with appropriate medical management.

Consider tuberculosis. India carries the world’s largest burden of tuberculosis, with an estimated 2.8 million incident cases annually (WHO Global TB Report). Studies tracking patients across Assam, Maharashtra, Tamil Nadu, and West Bengal have documented substantial delays in care-seeking and diagnosis .

The average delay from symptom onset to treatment initiation ranges from 7-9 weeks, well beyond acceptable limits for infectious disease control. Many patients initially seek care from informal providers, unqualified practitioners, or follow social media advice promoting steam inhalation, dietary regimens, or unproven herbal remedies. Stigma further delays care.

By the time patients reach qualified facilities, 30-60 per cent incur substantial out-of-pocket expenditure. And the financial distress often begins before treatment itself, during this preventable diagnostic delay.

The World Health Organization estimates that tuberculosis costs India nearly $24 billion annually in lost productivity and healthcare expenses. Each week of misinformation-driven delay is not merely a clinical failure, it is also avoidable economic haemorrhage. When a breadwinner is incapacitated, the entire household slides into poverty, children leave school, and the family turns to high-interest borrowing. The macroeconomic consequences are measurable and preventable.

Cancer presents a similarly troubling picture. Misinformation thrives because social media algorithms reward engagement, and “miracle cures” generate disproportionate attention. Indian oncologists routinely report patients presenting at advanced stages after pursuing unproven remedies. A study published in JAMA Oncology, analysing cancer patients who used complementary medicine, found that those relying on unproven treatments, especially when they delayed or refused conventional therapy, had significantly worse survival outcomes. Even modest percentage differences translate into tens of thousands of preventable deaths at a population level.

During the Covid-19 pandemic, these dynamics reached a surreal crescendo. Several products, often labelled as “evidence-based cures” were aggressively promoted despite lack of rigorous clinical validation. Some even claimed government endorsement before regulatory scrutiny forced withdrawal or modification of such claims. The episode highlighted the urgent need for stronger scientific vetting and communication discipline.

Fight misinformation early

While India’s scale presents unique challenges, countries like Finland offer instructive models. As one senior communications official put it, “The first line of defence against fake news is the kindergarten teacher.” Finland’s education system integrates media literacy across all levels, teaching students how misinformation is constructed, how statistics can mislead, and how false authority is manufactured.

India can replicate this using its vast network of ASHA workers, anganwadi centres, and government schools. We already have the distribution architecture; what we need is curricular intent. Health literacy, including the ability to identify medical misinformation, must become foundational, not incidental.

The second intervention, supported by research from Harvard Kennedy School and others, is “prebunking”. This approach exposes individuals to weakened forms of misinformation in advance, building psychological resistance. Much like vaccination, a small “dose” of falsehood equips the mind to recognise and reject it later.

Public health communication must, therefore, shift from reactive correction to proactive inoculation. Short, culturally contextualised videos in regional languages can demonstrate how misinformation is constructed, which emotional triggers it exploits, and how scientific evidence counters it. Doctors, ASHA workers, and trusted community figures must deliver this messaging, before misinformation fills the vacuum.

We must treat health communication with the same rigour we apply to drug approvals, surgical protocols, and infection control. In the age of algorithm-driven amplification, a viral myth can be deadlier than the disease it misrepresents.

(The writer is a cardiac surgeon and Chairman, Asian Heart Institute. Views are personal)

More Like This

Published on April 6, 2026