Résumé : Health knowledge, health attitude and fat consumption has been explored in a random sample of 2150 Belgian physicians below age 71; the response rate was 60.7%. Health knowledge, health attitude and fat consumption are significantly intercorrelated. Comparing general practitioners (G.Ps) to specialists, non significant differences were observed in terms of health knowledge whereas health attitude was more positive in G.Ps who, on the other hand, had a lower saturated fat intake score. Dutch speaking physicians had a higher health knowledge score whereas their fat intake score was significantly lower (less saturated fats) compared to their French counterparts. Differences in eating patterns between the French and Dutch speaking Belgian population are also observed in Belgian physicians.