The analysis of dynamics of morbidity and prevalence of illnesses after basic classes in 2008-2012 witnessed the height of indexes for children 0-17 due to the increase of level of morbidity and prevalence of ill- nesses of organs of breathing, eye and his additional vehicle, ear, innate teratosiss, deformations and chromosomal anomalies, illnesses of the system of circulation of blood, new formations, traumas, poisoning and some other re- sults from the action of external factors. To the factors of such action of environment next to the socially-psycholog- ical factors of forming of health such as incomplete and asocial family, absence of proof fascinations and interests, psychological propensity to alcoholizing, distribution of narcodependence, high general aggressiveness, violation of domestic relations, conflicts with coevals, parents and teachers, experts take harmful habits. Scientists mark that teens are decision from the point of view of forming of world view, vital values, attitude toward harmful habits, in particular to smoking. As a result of research within the framework of the Global check- ing system it is set above smoking, that the level of prevalence of smoking among students 7-9 classes of general educational establishments of Ukraine make 16,6%. Negative tendencies are set in prevalence of smoking among teenagers, namely: every third child begins to smoke under age 10; 3,7% of young smokers have certain signs of tobacco dependence (mainly guys); except cigarettes, other types of tobacco products (to 7,2%) acquire vogue gradually; half of teenagers, that does not smoke, ready to light next year (mainly girls – 61,4%). In literary sources mark the age – related divergences in relation to the estimation of frequency of smoking: junior schoolchildren consider, whatever swingeing majority of students never smoke – 68,7%, while, among junior teenagers part of positive answers of makes 60,0%, for senior teenagers – 28,3% and youth – 14,3%. With the purpose of estimation of prevalence of smoking among teenagers the anonymous questioning is con- ducted 375 teenagers 11-16 of schools Sumy after the specially worked out questionnaire. It is set as a result of research, that prevalence of smoking makes 26,7±2,3%, by the that is an unfavorable prognosis of sign from the point of view of forming of health of children and increase of frequency of smoking of persons of capable of work- ing age. Negative tendencies in prevalence of smoking consist in the following: to the early attempt of smoking – 7,7±0,3; to high specific gravity of teenagers that tried to smoke (70,7±2,3%); 43,8±5,1% smokers are had signs of tobacco dependence; 41,6% smokers are smoked every day by from 1 to 20 cigarettes. Unfavorable for the prophylaxis of smoking are surroundings of teenagers: 52,5±2,6% smoke in family, among friends – 75,1±2,8%, among teachers – 49,3±3,7%. 81,6±4,6% teenagers suffer from the passive smoking. Set high availability of ciga- rettes. In 67,1±2,8% of cases of cigarette it is possible to purchase in shops at presence of to 30 hryvnias on a day. Prophylactic measures in relation to smoking in family, schools require an improvement. Work of is produced in obedience to the plan of research works of the of Sumy of state pedagogical university of the name of A. S. Makarenka of departments of sporting medicine and valeology after a theme «Physiology hy- gienical accompaniment of of health of maintenance of activity of establishments of education» (number of state registration 0113U004662).
