[Religiosity and health in epidemiological studies].

The relationship between religion and health has been the subject of growing interest in epidemiological research. The aim of this paper is to review the data on relationship between health-related behaviors associated with religiosity and reduced mortality and morbidity. In this review beneficial effects of religiosity on specific physical and mental health diseases, focusing on coronary heart disease, cancer, depression, suicide, psychosis, and substance abuse are described. Religious beliefs and practices can represent powerful sources of comfort, hope, and meaning and they are associated with protective dietary habits and reduced risk of substance abuse. Religiosity can be also harmful as it is often entangled with neurotic and psychotic disorders. The current published data suggests that religiosity has a favorable effect on survival, although the methodological controversies including presence of biases typical for observational research indicate that results should be interpreted with caution.