Lifestyle is the way an individual or group lives – it includes patterns of social relationships, consumption, entertainment and dress. It can also reflect an individual’s attitudes, values and worldview. It is a major influence on a person’s physical and mental health. Several studies suggest that a healthy lifestyle can prevent or alleviate many common illnesses. A healthy diet, regular exercise and adequate sleep are some of the most important components of a positive lifestyle. There are various definitions of the term “lifestyle.” One approach, developed by Alfred Adler, is a psychological interpretation of the concept, arguing that the framework of guiding values and principles individuals develop in their early years end up determining the system of judgement they use throughout their life. This interpretation contrasts with Max Weber’s sociological definition of lifestyle as a function of external factors such as class, income and status. A person’s lifestyle can be influenced by many things, including the place they live, their career and family, their health and the amount of time spent in different activities. The most significant influence, however, tends to be the culture they live in. This influences the traditions, holidays, music and art that they enjoy. It also determines the types of food they eat and how much activity they engage in. Moreover, a person’s lifestyle can be affected by their health and the environment. For example, a person living in a city with a lot of air pollution is likely to suffer from heart disease and lung diseases. Likewise, a person who consumes a diet high in sugar and fat is likely to have more weight problems than a person who has a balanced diet. If an individual’s lifestyle consists of unhealthy habits, they should seek to change them. This can be done by taking small steps at a time, such as reducing the amount of sugar they consume or increasing their activity level. It is also helpful to talk to a doctor about any health problems they may have. The concept of lifestyle has been a topic of debate for many decades. Some researchers have argued that it can have negative effects on a person’s health, while others have dismissed this concern. Some of the most serious issues resulting from a poor lifestyle include consanguinity in certain ethnicities and overuse of medications. In Iran, for example, the rate of genetic disorders has been correlated with the prevalence of consanguinity and the overuse of drugs. Reformation of these unhealthy lifestyles is a critical step for decreasing the incidence of genetic disorders in that country.