Exposure to contaminated sediments during recreational activities at a public bathing place.

More and more time is spent on recreational activities, but few risk assessments focus specifically on these situations and exposure factor data are often scarce. To assess exposure to contaminants at a public bathing place in an urban environment, we have compiled literature data, conducted observation studies, and analyzed water and sediment samples. The levels of anthropogenic contaminants are high in urban environments and traffic frequently plays an important role. In this study, to characterize variability and uncertainty, the deterministic exposure calculations for metal pollutants were supplemented by a probability bounds analysis for the polycyclic aromatic hydrocarbons (PAH). The results from these calculations show that oral intake is the major exposure route for metals, while skin absorption, with present assumptions, is more important for the PAH. The presently measured levels of contaminants, at this public bathing place, cannot be anticipated to cause any significant adverse influence on public health. This assessment methodology is easy to adapt and can be used routinely in other situations with more heavily contaminated surface sediments and lake water.

Evaluation of a new Internet-based self-help guide for patients with bulimic symptoms in Sweden.

The current study evaluated a new Internet-based self-help guide based on cognitive-behavioural therapy for patients with bulimic symptoms. Thirty-eight participants from a waiting list at an eating-disorder outpatient unit were assessed pre-treatment, post-treatment and at a 2-month follow-up using the Rating of Anorexia and Bulimia interview-revised version, an anamnesis questionnaire, the Eating Disorder Inventory-2 (EDI-2) and Symptom Check List-90-Revised (SCL-90R). The SCL-90R Global Severity Index and most EDI-2 subscales showed significant differences from pre-to post-treatment and the 2-month follow-up, apart from ineffectiveness, impulse regulation and social insecurity. Expert ratings revealed a significant reduction in vomiting, dietary restraints and weight phobia, with the exception of binge eating from pre-treatment to the 2-month follow-up. Exercise increased significantly, indicating that participants changed their method of compensation. An Internet-based self-help guide for bulimic symptoms is a promising new tool and can be used effectively as the first step in a stepped-care model. Further evaluations with randomized controlled trials are necessary.