Heart disease does not always announce itself early. Some people have noticeable warning signs, while others may have no symptoms until a serious problem occurs. The good news is that many factors affecting heart health can be improved through everyday habits.A heart-friendly lifestyle is not about following a strict diet or spending hours at the gym. Small, consistent changes in what you eat, how much you move, how well you sleep, and how you manage conditions such as high blood pressure and diabetes can make a meaningful difference. An unhealthy diet, physical inactivity, tobacco use, and harmful alcohol use are among the major behavioural risk factors for cardiovascular disease.Heart disease can develop because of a combination of lifestyle, medical and genetic factors. Some cannot be changed, such as age and family history. However, several important risk factors can be managed. These include high blood pressure, high cholesterol, diabetes or high blood sugar, smoking or tobacco use, being overweight or having obesity, physical inactivity, an unhealthy diet, excessive alcohol consumption, poor sleep and long-term stress. Regular health checks can help identify these risks before they lead to complications.Your everyday diet directly affects several heart disease risk factors, including blood pressure, cholesterol, blood sugar, and body weight. Instead of looking for a single “heart-healthy” food, focus on your overall eating pattern. Include vegetables and fruits; whole grains such as oats, brown rice, and whole wheat; pulses, beans, and lentils; nuts and seeds in moderate portions; and minimally processed foods. At the same time, reduce foods high in salt, added sugar, unhealthy fats, and highly processed ingredients. For an Indian diet, simple changes can make a difference. Choose dal with vegetables, add a serving of salad or cooked vegetables to meals, replace refined grains with whole grains when practical, and limit frequent intake of fried snacks, sweets and processed foods. You do not need an intense workout routine to support your heart. Brisk walking, cycling, swimming, dancing and other activities can all count. Adults should aim for at least 150 minutes of moderate-intensity aerobic activity each week. If you are currently inactive, start gradually with a 15- to 20-minute walk and slowly increase the duration. Breaking up long periods of sitting and taking short movement breaks during work can also help.Smoking and tobacco use damage blood vessels and increase the risk of heart disease and stroke. If you smoke, quitting is one of the most important steps you can take for your heart. High blood pressure also deserves attention because it often causes no obvious symptoms. Regularly check your blood pressure, particularly if you have risk factors or a family history of hypertension.Similarly, keeping a check on cholesterol and blood sugar is important. High LDL cholesterol can contribute to plaque formation inside the arteries, while persistently high blood sugar can damage blood vessels and increase cardiovascular risk. If you have diabetes, prediabetes, or high cholesterol, work with your healthcare team to establish appropriate targets.Maintaining a healthy weight, getting adequate sleep and managing stress in healthy ways can further support cardiovascular health. Rather than aiming for rapid weight loss, focus on sustainable habits such as controlling portion sizes, reducing sugary drinks and high-calorie snacks, staying active and avoiding crash diets.It is also important to recognise possible warning signs. Chest pain, pressure or discomfort, breathlessness, unusual tiredness, dizziness, palpitations, swelling of the legs or feet and reduced ability to exercise can be symptoms of heart disease. Women may also experience shortness of breath, nausea, vomiting, or pain in the back or jaw during a heart attack.Sudden or severe chest pain, severe breathlessness, fainting, cold sweating, or pain spreading to the arm, shoulder, jaw, or back should not be ignored. These can be signs of a medical emergency and require immediate medical attention.Reducing the risk of heart disease does not require perfection. Eating a balanced diet, staying active, avoiding tobacco, maintaining a healthy weight, sleeping well and keeping blood pressure, cholesterol, and blood sugar under control can all contribute to better cardiovascular health. Most importantly, do not wait for heart trouble symptoms before paying attention to your heart. Prevention works best when healthy habits and regular health checks become part of everyday life.By Dr Niraj Kumar, Director and Head of Department, Cardiology, PB Health, Gurgaon