Lifestyle diseases (also sometimes called diseases of longevity or diseases of civilization interchangeably) are diseases that appear to increase in frequency as countries become more industrialized and people live longer. They can include Alzheimer's diseaseArthritisatherosclerosisasthma,cancer, chronic liver disease or cirrhosischronic obstructive pulmonary diseaseType 2 diabetesheart diseasemetabolic syndromechronic renal failureosteoporosisstrokedepression and obesity.
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The lifestyle that you choose to lead can cause certain lifestyle diseases to develop. Despite having choice and control when it comes down to lifestyle factors - such as what we eat, how often we exercise, whether we choose to smoke and the amount of alcohol we drink.
Poor diet and sedentary lifestyles are known contributors to child and adult obesity. 
Poor lifestyle choices, such as smoking, overuse of alcohol, poor diet, lack of physical activity and inadequate relief of chronic stress are key contributors in the development and progression of preventable chronic diseases, including obesity, type 2 diabetes mellitus, hypertension, cardiovascular disease and several types of cancer.
Cigarette smoke is by far the most common cause of lung cancer.
the effects of alcohol are detrimental. Not only may alcohol cause harm from its direct intoxicating effects, patterns of alcohol misuse may also damage organs over time and cause lifestyle diseases.
Prolonged alcohol abuse to heart disease, cancers, obesity, malnutrition, mental health issues, addiction to alcohol (alcoholism) and liver diseases.