Lifestyle diseases refer to ailments or illnesses based on the day-to-day habits of people and how they live their lives. They are non-communicable diseases (NCD), i.e. non-contagious or not transmissible directly from one person to another. Lifestyle diseases are commonly caused by a sedentary routine or lack of physical activity, unhealthy eating, and dangerous habits and addictions such as alcohol, drugs and smoking. The most common or top few lifestyle diseases include obesity, type II diabetes, high blood pressure, hypertension, stroke, heart diseases,lung cancer, chronic liver disease or cirrhosis, chronic kidney failure, etc. A number of these diseases are non-reversible, serious and can even be chronic or fatal. However, most if not all of them are preventable.