Tanyo Stefanov


The article presents a study in which participants are divided into three groups according to the degree of influence of risk factors for lung cancer: high-risk, moderate-risk and low-risk. This differentiation was made on the basis of a self-developed methodology including fourteen indicators, based on the most common risk factors, as follows: active smoking (the risk of which is increased in proportion to the number of cigarettes smoked per day), secondhand smoking, occupational harm, occupational harm, obesity, inheritance, alcohol consumption, severe pulmonary infections, decreased physical activity, estrogen replacement therapy and frequent breathing of exhaust gases.


risk factors, lung, carcinoma

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