"Impact by social factors on Moscow inhabitants' health" looks into relationships between actual health conditions and the levels of respective individual social capital on the basis of a sociological study among Moscow inhabitants carried out in the spring of 2004. The above relationships have been measured by means of following indices: social networks and informal social supports; degree of trust to institutions of the Russian state or to human beings in general; actual membership of individuals involved in voluntary non-government organizations. However, an outstanding role belongs to possibility to maintain contacts with the closest relatives, or family members.