Preventive Medicine: A Sustainable Path to Better Health in India

Every year, India spends billions treating diseases that could have been prevented in the first place. From diarrhoea caused by unsafe drinking water to diabetes fuelled by sedentary lifestyles, a huge share of the country’s disease burden is avoidable. This is where preventive medicine steps in – not as a replacement for hospitals and treatments, but as a smarter, more sustainable first line of defence. Rather than waiting for people to fall sick, preventive medicine works to stop illness before it starts, making it one of the most powerful tools for building a healthier India.

What is preventive medicine? 🔗

Preventive medicine is the branch of healthcare focused on preventing diseases and promoting overall well-being, rather than diagnosing and curing illnesses after they occur. It shifts the focus from reactive treatment to proactive protection. While curative medicine asks “How do we fix this?”, preventive medicine asks “How do we stop this from happening?”

This approach works across three levels. Primary prevention aims to stop disease before it ever begins – think vaccinations, hygiene education, and clean water access. Secondary prevention involves early detection through screening programmes and health check-ups. Tertiary prevention focuses on managing existing conditions to prevent complications and improve quality of life.

What makes preventive medicine particularly relevant today is its alignment with sustainability. Curative healthcare accounted for 64% of total healthcare spending in India in 2021-22 and was expanding at an annual rate of 15%. Every prevented hospitalisation saves resources – from energy and medical supplies to the financial burden on families. In a country where at least 40% of respondents in a recent poll strongly preferred preventative health , the shift toward prevention is not just desirable but necessary.

Population-level preventive medicine 🔗

When preventive medicine is applied at the level of entire populations, it overlaps heavily with public health. It encompasses large-scale efforts in vaccination, pest and vector control, food safety, water supply hygiene, and sanitation improvement. In developing nations like India, these population-level strategies form the backbone of disease prevention.

Immunisation: India’s massive vaccination drive 🔗

India’s Universal Immunization Programme (UIP) is among the world’s largest public health programmes. It targets close to 2.67 crore newborns and 2.9 crore pregnant women annually, providing free immunisation against 12 vaccine-preventable diseases. Diseases covered include diphtheria, pertussis, tetanus, polio, measles, rubella, and hepatitis B, among others.

To accelerate coverage, the government launched Mission Indradhanush in December 2014, specifically targeting children missed by routine immunisation in remote and underserved areas. A total of 5.46 crore children and 1.32 crore pregnant women have been vaccinated across all phases of Mission Indradhanush so far. A scientific study published in 2021 showed that the first two phases increased full immunisation rates of children by 27%.

India’s successful elimination of polio in 2014 and maternal and neonatal tetanus in 2015 stand as powerful examples of what population-level preventive medicine can achieve.

Sanitation and clean water: the Swachh Bharat Mission 🔗

The connection between sanitation and health is direct and well-documented. Open defecation leads to contaminated water and food supplies, which in turn causes diarrhoea, cholera, and malnutrition – especially in children. Studies have outlined open defecation’s direct links to higher child mortality, malnutrition, and poverty.

The Swachh Bharat Mission (SBM), launched in October 2014, tackled this problem head-on. Approximately 90 million toilets were constructed during the first phase, which ran until October 2019. The results were significant: the WHO estimates that the SBM prevented 300,000 deaths and avoided 14 million DALYs (Disability-Adjusted Life Years) between 2014 and 2019.

Areas with over 30% toilets constructed under SBM saw 5.3 fewer infant deaths and 6.7 fewer under-five deaths per 1,000 live births. Families in ODF (Open Defecation Free) villages saved an average of INR 50,000 annually on health costs , and India’s national open defecation rate declined to 7% by 2024, according to the WHO/UNICEF Joint Monitoring Programme.

This is preventive medicine operating at infrastructure scale – improving health outcomes not through medication, but through toilets, clean water, and behaviour change.

Vector control and food safety 🔗

Vector-borne diseases like malaria and dengue remain significant public health challenges in India. Preventive strategies here include mosquito control programmes, improved surveillance systems, and community education. India’s National Health Policy 2017 recognises the challenge of drug resistance in malaria and calls for integrated approaches combining treatment regimen changes with strong inter-sectoral collaboration. Food safety standards and regular monitoring of water quality also fall under this umbrella, preventing outbreaks before they spread.

The individual-level preventive approach 🔗

Population-level strategies are critical, but preventive medicine also works at the individual level. Here, the approach is more personal and holistic – treating the body as an interconnected whole rather than a collection of separate parts.

Eastern medicine systems and holistic health 🔗

Traditional medical systems, particularly Traditional Chinese Medicine (TCM), have long embodied the preventive philosophy. TCM is based on the concept that a vital force called Qi flows through the body, and any imbalance can cause disease. TCM focuses on maintaining the yin-yang balance to preserve health and prevent illness , using methods such as acupuncture, herbal remedies, dietary adjustments, and mind-body exercises like Qigong and Tai Chi.

TCM regards each individual as unique, so all corresponding therapeutic and preventive approaches are personalised. This focus on individual constitution and balance is central to the preventive philosophy – the goal is to maintain health, not merely treat disease after it arrives.

India has its own parallel in the AYUSH systems – Ayurveda, Yoga, Unani, Siddha, and Homeopathy. The National Health Policy 2017 promotes integration of AYUSH into preventive healthcare, aligning with WHO’s Sustainable Development Goal 3. The government has been systematically bringing traditional medicine into public healthcare delivery. India now has 12,500 Ayushman Arogya Mandirs led by traditional medicine doctors, 750,000 registered practitioners, and more than 700 AYUSH medical colleges.

The Ayushman Bharat programme, launched in 2018, transformed primary healthcare delivery by upgrading existing health sub-centres and primary health centres into Health and Wellness Centres. These centres now integrate AYUSH practices alongside modern medicine, offering screening for non-communicable diseases, maternal healthcare, mental health support, and geriatric care – all under one roof.

Socioeconomic factors in preventive medicine 🔗

Preventive medicine cannot be separated from the economic and social conditions people live in. Poverty, lack of education, and low social status are among the strongest predictors of poor health. People in these circumstances face higher disease risks due to inadequate nutrition, unsafe housing, limited healthcare access, and hazardous working conditions.

This is why preventive medicine is inherently multidisciplinary. Sociologists, psychologists, economists, and community health workers all play roles in addressing the root causes of illness. Improving a community’s education level, for instance, has a measurable impact on health outcomes – educated parents are more likely to vaccinate their children, practise hygiene, and seek early medical care.

India’s National Health Policy 2017 recommends a time-bound rise in public health spending to 2.5% of GDP and emphasises a “Health in All” approach that recognises health as a cross-cutting concern affecting poverty, education, gender equality, and economic growth. Stronger primary healthcare is essential for achieving health-related Sustainable Development Goals and universal health coverage, contributing to goals beyond health including poverty, hunger, education, and clean water.

Challenges to preventive medicine in India 🔗

Despite significant progress, India still faces serious hurdles in fully realising the potential of preventive medicine. The UN’s development frameworks, including the earlier Millennium Development Goals and current Sustainable Development Goals, have consistently flagged these challenges.

Clean water and sanitation gaps 🔗

While the Swachh Bharat Mission has achieved impressive numbers, open defecation continues in India in large numbers despite official claims of 100% household coverage. Lack of piped water supply, poor construction of toilet substructures, and misconceptions among people about toilet use remain key challenges. Sustained behavioural change is needed alongside infrastructure development.

Maternal and child health 🔗

Inadequate healthcare during pregnancy and delivery remains a concern, particularly in rural and tribal areas. The remaining 7% of children who are not fully immunised typically belong to marginalised communities – migrant families, tribal populations, and people living in remote areas. These groups face barriers including vaccine hesitancy, misinformation, and irregular access to health services.

Immunisation awareness and access 🔗

Although India’s immunisation drive has made enormous strides, reaching the last mile remains difficult. Several factors contributed to historically low vaccination coverage, including challenges in reaching large, mobile, and isolated populations, inadequate demand from populations lacking information, and concerns over potential side effects. Digital tools like the U-WIN portal, launched nationwide in 2024, are now being used to improve tracking and delivery.

Non-communicable diseases on the rise 🔗

Non-communicable diseases have been the primary cause of death over the last three decades, accounting for 71% of global deaths, with India responsible for 66% of all deaths in 2019. Heart disease, cancer, diabetes, and chronic respiratory conditions are driven largely by lifestyle factors – sedentary habits, poor nutrition, tobacco use, and stress. These are precisely the conditions that preventive medicine is best positioned to address, yet India’s healthcare system has historically prioritised curative care.

Why preventive medicine is the sustainable choice 🔗

The case for preventive medicine is ultimately a case for sustainability. Prevention reduces the demand for hospital beds, medical equipment, pharmaceuticals, and energy-intensive treatments. It lowers the carbon footprint of healthcare systems and frees up resources that can be redirected toward development, education, and poverty reduction.

For families, prevention means fewer catastrophic medical expenses. For communities, it means a healthier workforce and lower rates of malnutrition and child mortality. For the country, it means a stronger foundation for achieving the Sustainable Development Goals.

India’s experience with programmes like Swachh Bharat, Mission Indradhanush, and Ayushman Bharat demonstrates that preventive approaches, when implemented at scale with political commitment and community engagement, deliver measurable results. The integration of traditional medicine systems like AYUSH with modern healthcare adds another dimension – a culturally rooted, holistic approach to well-being that resonates with India’s diverse population.

The path forward requires continued investment in sanitation, clean water, immunisation, health education, and nutrition – alongside addressing the deeper socioeconomic factors that keep populations vulnerable. Preventive medicine is not just a medical strategy; it is a development strategy.

What do you think? Can India shift its healthcare spending significantly from curative to preventive models in the next decade, and what role should traditional medicine systems play in that transition?

References

1. https://nhm.gov.in/index1.php?lang=1&level=2&sublinkid=824&lid=220
2. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2071949
3. https://swachhbharatmission.ddws.gov.in/
4. https://www.mohfw.gov.in/sites/default/files/9147562941489753121.pdf
5. https://www.mdpi.com/2071-1050/13/6/3415
6. https://www.undp.org/india/blog/undp-supports-indias-immunisation-programme-reaching-millions-annually-digital-platforms-and-community-initiatives-universal-coverage