 Cardiovascular risk factors and psycho-social characteristics will be determined using a questionnaire in primary care physician offices in the city of Merzig, Germany. We will recruit all people age18y with a body-mass index BMI 30 kgm2 plus patients in the two following participating physician offices: Praxisnetz and Merzig. Cardiovascular risk will be assessed using the PROCAM Munster Heart Study, ESC European Society of Cardiology and Framingham risk scores. Psycho-social factors will be recorded according to the methodology of the INTERHEART study. 