Is change in health behavior of Dutch medical students related to change in their ideas on how a physician's lifestyle influences their patient's lifestyle?

A change of medical students' health behavior over time may be related to a change in their opinion regarding the relationship between physicians' own health behavior and effective healthy lifestyle counseling in patients. To investigate Dutch medical students' (1) change of health behavior over time, (2) change of opinion over time regarding the relationship between a physician's own health behavior and effective healthy lifestyle counseling in patients, and (3) the relationship between these aspects. All medical students from two Dutch medical schools were invited to fill out an online questionnaire in 2010. Respondents of 2010 were invited for 2011. Health behavior was assessed with five aspects: drinking behavior, smoking, eating habits, sleeping behavior, and sexual behavior. Their opinion regarding the relationship between their own health behavior and effective healthy lifestyle counseling in patients was assessed with one statement. At baseline, 2016 medical students (41%) participated, and at 1 year follow-up 1078 medical students (53%) participated. Fourteen percent adopted healthier behavior over time, and 12% adopted unhealthier behavior. Twelve percent positively changed their opinion, and 13% negatively changed their opinion. Participants who adopted unhealthier behavior were more inclined to also have negatively changed their opinion than participants who adopted healthier behavior (statistically nonsignificant difference, p=0.38). No significant relationship was found between a change in health behavior of Dutch medical students and a change of their opinion regarding the relationship between physicians' own healthy lifestyle and their ability to effectively influence patients to adhere to a healthy lifestyle