Immediately after biological sampling / anthropometric measurements a short counselling takes place. Trained counsellors answer all eventual questions on the study posed by participants and inform them on the next steps. They also deliver to all participants a basic booklet containing general information on primary prevention, based on the most reliable and updated bibliographic sources on diet and physical exercise (World Cancer Research Fund/American Institute for Cancer Research. Food, nutrition, physical activity, and the prevention of cancer: a global perspective. Washington, DC: AICR, 2007; WHO, Move for Health, 2002; EU Working Group "Sport and Health", EU Physical Activity Guidelines, 2008).