Most Dangerous Diseases in India 2025, Factors and Preventions

India faces many health challenges, with several diseases posing serious risks to people’s lives. Some diseases spread easily, while others happen due to lifestyle choices. Having health insurance can help manage medical expenses if you face any health issues. In this blog, we will discuss the top 10 most dangerous diseases in India, their symptoms, causes, and how to prevent them.

1. Heart Disease
Heart disease is one of the leading causes of death in India. It includes conditions like heart attacks, heart failure, and blocked arteries.
- Signs: Chest pain, shortness of breath, fatigue, irregular heartbeat
- Causes: High cholesterol, high blood pressure, smoking, unhealthy diet, lack of exercise
- Prevention: Eat a balanced diet, exercise regularly, avoid smoking, manage stress, and go for regular health check-ups
2. Cancer
Cancer occurs when abnormal cells grow uncontrollably in the body. It can affect various organs like the lungs, breast, and stomach.
- Signs: Unexplained weight loss, lumps, persistent cough, unusual bleeding, changes in skin
- Causes: Genetic factors, smoking, alcohol consumption, poor diet, pollution
- Prevention: Avoid tobacco and alcohol, eat healthy, exercise, get regular screenings, and protect yourself from harmful chemicals
3. Diabetes
Diabetes happens when the body cannot properly process sugar, leading to high blood sugar levels. If untreated, it can cause serious health problems.
- Signs: Frequent urination, excessive thirst, fatigue, blurred vision, slow healing of wounds
- Causes: Poor diet, lack of physical activity, obesity, family history
- Prevention: Maintain a healthy weight, eat less sugar, exercise, and get regular blood sugar tests
4. Tuberculosis (TB)
TB is a bacterial infection that mainly affects the lungs but can spread to other parts of the body. It is a major public health concern in India.
- Signs: Persistent cough, chest pain, weight loss, fever, night sweats
- Causes: Bacteria spread through the air from infected individuals
- Prevention: Get vaccinated (BCG vaccine), maintain hygiene, wear masks in crowded places, and complete full treatment if diagnosed
5. Chronic Obstructive Pulmonary Disease (COPD)
COPD is a lung disease that makes breathing difficult. It usually happens due to long-term exposure to harmful gases, especially from smoking.
- Signs: Difficulty in breathing, chronic cough, wheezing, chest tightness
- Causes: Smoking, air pollution, exposure to harmful chemicals
- Prevention: Avoid smoking, use masks in polluted areas, improve air quality in your surroundings
6. Stroke
A stroke happens when blood flow to the brain is blocked, leading to brain damage. It can cause paralysis and even death if not treated quickly.
- Signs: Sudden weakness on one side of the body, trouble speaking, loss of balance, severe headache
- Causes: High blood pressure, obesity, smoking, diabetes, stress
- Prevention: Control blood pressure, eat healthy, exercise, and manage stress levels
7. Dengue Fever
Dengue is a mosquito-borne viral infection that can cause severe flu-like symptoms and, in some cases, life-threatening complications.
- Signs: High fever, severe headache, joint and muscle pain, skin rashes, bleeding
- Causes: Mosquito bites (Aedes mosquitoes)
- Prevention: Use mosquito repellents, avoid stagnant water, wear protective clothing, and use mosquito nets
8. Malaria
Malaria is another mosquito-borne disease that affects millions of people in India every year, especially during the monsoon season.
- Signs: High fever, chills, sweating, nausea, vomiting
- Causes: Mosquito bites (Anopheles mosquitoes)
- Prevention: Use mosquito nets, wear long sleeves, eliminate mosquito breeding areas, and take anti-malaria medication when traveling to high-risk areas
9. Hepatitis (A, B, C, D, E)
Hepatitis affects the liver and can cause serious complications like liver failure and cancer if untreated. It spreads through contaminated food, water, and body fluids.
- Signs: Jaundice, loss of appetite, dark urine, fatigue, stomach pain
- Causes: Viral infection, contaminated food/water, unsafe blood transfusion, unprotected sex
- Prevention: Get vaccinated, drink clean water, practice good hygiene, and avoid sharing needles
10. COVID-19 & Respiratory Infections
COVID-19 and other respiratory infections like pneumonia and flu continue to affect people, especially those with weak immune systems.
- Signs: Fever, cough, shortness of breath, body pain, fatigue
- Causes: Viral infection, airborne transmission, close contact with infected individuals
- Prevention: Wear masks in crowded places, maintain hygiene, follow social distancing, and get vaccinated
FAQs: 10 Most Common and Dangerous Diseases in India 2025
1. हृदय रोग (Cardiovascular Diseases)
2. मस्तिष्क का आघात (Brain Stroke)
3. श्वसन संबंधी रोग (Respiratory Diseases)
4. टीबी (Tuberculosis)
5. क्रॉनिक ऑब्सट्रक्टिव पल्मोनरी डिजीज (Chronic Obstructive Pulmonary Disease)
6. मधुमेह (Diabetes)
7. भूलने की बीमारी (Alzheimer)
8. दस्त (Diarrhea)
9. कार्सिनोमा (Malignant Tumors)
10. कोविड-19 (Covid-19)
Duncan disease, also known as X-linked lymphoproliferative (XLP) syndrome is a rare genetic condition in which the immune system stops working properly.
Down syndrome, Fragile-X syndrome, Turner syndrome, Triple-X syndrome, and Klinefelter syndrome are five genetic diseases.
Systemic sclerosis or Scleroderma is a disease where a group of uncommon disorders causes an individual’s skin to tighten and become hardened.
After COVID-19, Tuberculosis is the most fatal and infectious disease in the world. The drug-resistant TB strains are a great cause of concern.
As per the National Institutes of Health (NIH), there are over 7,000 rare or uncommon illnesses present. Some rare diseases are hereditary and are passed from parent to their children, while some are visible at birth. There is another group that might show up later in life.
Some diseases/conditions have no cure. Some of them are also enlisted in the list of deadliest diseases including conditions like Alzheimer’s disease, multiple sclerosis, muscular dystrophy, and some forms of cancer.
Ischemic heart disease is one of the deadliest diseases and a leading cause of death globally. Stroke, COPD, respiratory cancers, and lower respiratory infections are other diseases accounting for a noteworthy number of deaths each year.

Author Bio
Paybima Team
Paybima is an Indian insurance aggregator on a mission to make insurance simple for people. Paybima is the Digital arm of the already established and trusted Mahindra Insurance Brokers Ltd., a reputed name in the insurance broking industry with 17 years of experience. Paybima promises you the easy-to-access online platform to buy insurance policies, and also extend their unrelented assistance with all your policy related queries and services.
Other Health Insurance Products
Latest Post
.png)
Fixed Deposits (FDs) are one of the most popular and safest investment options in India. Among the various banks offering FD schemes, Equitas Small Finance Bank stands out for its competitive interest rates and flexible investment plans. If you're thinking of investing in Equitas Fixed Deposits in 2025, this guide will help you understand the FD calculator, eligibility criteria, and the interest rates offered by the bank.
.png)
Taking a personal loan is a big financial decision, and one of the smartest things you can do before applying is to calculate your monthly EMI. If you're considering a loan from Punjab National Bank (PNB), the PNB Personal Loan EMI Calculator is your best friend.
.png)
Learn everything you need to know about the Post Office Fixed Deposit (FD) scheme, including the FD calculator, eligibility criteria, and 2025 interest rates. Discover the benefits of investing in this secure and government-backed savings option, along with the new FD scheme introduced for senior citizens. Whether you're a beginner or experienced investor, this guide will help you make an informed decision for your financial future.
.png)
Are you planning to take a personal loan from SBI (State Bank of India)? One of the first steps in smart loan planning is to calculate your monthly EMI—so you know how much you’ll pay and whether it fits your budget.
That’s where the SBI Bank Personal Loan EMI Calculator comes in handy. In this blog, we’ll explain what it is, how it works, how to use it, and why it’s an essential financial tool before applying for a loan.
.png)
Saving money is always a wise choice, especially when you want it to grow safely over time. One of the most trusted and traditional ways to do that in India is through Fixed Deposits (FDs). The Bank of Maharashtra, a government-owned public sector bank, offers excellent FD schemes with competitive interest rates and flexible options for different types of investors.