ABSTRACT
To monitor the exposure of Canadian populations, Health Canada has carried out six major surveys of breast milk contaminants, beginning in 1967. In these national surveys, breast milk was collected from nursing mothers at various times in their nursing period, and the concentrations of chlorinated hydrocarbons were measured. There was a downward trend from 1967 to 1992, in the concentrations of organochlorine (OC) pesticides and polychorinated biphenyl hydrocarbons (PCBs). This regression was observed for samples across Canada, except for a sharp isolated increase in 1982 for the Quebec Province. As the disappearance curves of the chemicals surveyed follow the same pattern for both Ontario and Canada, a similar decline could be expected of OC concentrations in human breast milk in the Great Lakes Basin.
Subject(s)
Environmental Exposure , Insecticides/analysis , Milk, Human/chemistry , Polychlorinated Biphenyls/analysis , Adult , Canada , Female , Health Surveys , Humans , Population Surveillance , Retrospective StudiesABSTRACT
This study was designed to investigate the relationship between loneliness and self-esteem for adolescents (n = 57; age range 16 to 18 years). As hypothesized, scores on the UCLA Scale for Loneliness correlated negatively with adolescents' scores on Coopersmith's self-esteem measure. And, scores on two affective dimensions of loneliness (Isolation and Dejection) correlated negatively with scores on self-esteem.
