Participants will be randomly assigned to a regular threatment (control group) or to a lifestyle changing workshop. The workshop will consist of 11 meetings with behavioral lessons in nutrition, cooking, stress realese and physical activity. The study population will include 100 crohn's disease patients in remmision that will be recruited and will be randomly divided into two groups: an intervention group of 50 will commence the workshop during 2007 and a control group of 50 who will continue their regular threatment. an IBDQ , CDAI and blood samples for metabolic index will be taken from the participant in the staudy before entering the study and every half a year for three years.