Abstract
Objective: Previously, we identified a higher positive correlation between the fasting insulin concentration (F-IRI) and body weight than F-IRI and the stage of severity of diabetes mellitus in subjects in Ningen Dock, with the majority of them being healthy or at least showing no severe symptom of lifestyle related disease. We have also reported the significance of measuring F-IRI as a risk factor for lifestyle related diseases in the 1st World Congress on Ningen Dock in Okinawa. The present study was conducted to examine whether lifestyle itself really affect insulin resistance. Methods: A questionnaire about lifestyle, including exercise, drinking, and smoking were performed besides the usual measurement items in Ningen Dock to investigate the relationship between insulin resistance and lifestyle itself. Results: As we have reported before, BMI and FPG were selected as predictors of a high F-IRI. Both the habits of exercise and drinking were also selected as independent predictors. However, the habit of smoking did not affect insulin resistance. Conclusions: These results indicate that the habits of exercise and drinking borh affect insulin resistance. However, the habit of smoking does not affect if. It is still questionable what level of exercise and alcohol is suitable regarding insulin resistance, and whether any different effects on insulin resistance exist due to gender. However, it is a very important for us to guide subjects who undergo Ningen Dock appropriately. Therefore, we have to keep in mind that an excessive prescription of exercise and excessive restriction of the alcohol intake in healthy subjects may not necessarily help them maintain a healthy life.
