According to religious, geographical, economic, cultural and political criteria, people follow a certain lifestyle. It refers to the characteristics of the people who lived in a region in special times. It contains people's daily activities and behaviors in diet, entertainment and work. Lifestyle is an important factor for health. Many people follow an unhealthy lifestyle. The result is therefore more disease, disability and more deaths. Problems include hypertension, overweight, violence and so on, these can be caused by an unhealthy lifestyle. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay People's lives change day by day. Unhealthy lifestyle refers to unhealthy diet, malnutrition, smoking, alcohol consumption, drug abuse, stress and so on, which are the main lifestyle patterns included. People face new challenges, networks are the main challenge affecting people's physical and mental health. Misuse and excessive use of technology is the challenge. Therefore, according to existing studies, it can be stated that: lifestyle has a significant influence on the physical and mental health of human beings. There are different forms of such influences. Inbreeding in some ethnicities is a form of dominant lifestyle that leads to genetic disorders. Reforming this unhealthy lifestyle is a preventative factor in decreasing the rate of genetic diseases. In some countries, excessive use of drugs is a major unhealthy lifestyle. Iran is one of the 20 countries that use the most drugs. They prefer drugs to other interventions. Furthermore, in 15-40% of cases they use drugs almost without a medical prescription. Painkillers, eye drops and antibiotics are the most used in Iran. While self-medications such as antibiotics have a negative effect on the immune system, if the individual were to come down with an infection, antibiotics will not be effective in treating it. Overall, 10% of those who self-medicate will experience serious complications such as drug resistance. Sometimes drug allergy is so severe that it can cause death. Finally, lifestyle variables that influence health can be classified into some elements: Diet and body mass index (BMI): diet is the most important factor in lifestyle and has a direct and positive relationship with Health. Poor nutrition and its consequences, such as obesity, represent a common health problem in urban societies. Unhealthy lifestyle can be measured by BMI. The urban lifestyle leads to nutritional problems such as the use of fast food and poor foods, increasing problems such as cardiovascular ones. Exercise: To treat general health problems, exercise is included in the lifestyle. Continuous exercise along with a healthy diet increases health. Some studies underline the relationship between active lifestyle and happiness. Sleep: One of the foundations of a healthy life is sleep. Sleep cannot be separated from life. Sleep disorders have various social, psychological, economic and health consequences. Lifestyle can affect sleep, and sleep has a clear influence on mental and physical health. Sexual behavior: A normal sexual relationship is necessary for a healthy life. Sexual relationship dysfunction is the problem of most societies and has a significant effect on mental and physical health. It can be said that a dysfunctional sexual relationship can cause various family problems or sex-related diseases such as; AIDSSubstance abuse: Addiction is considered a style of, 31(9), 1317–1326.