Background and aims : To assess, in patients with Type 1 diabetes (T1 DM), the effects of adding a carbohydrate counting programme (CCP) to continuing education by Group Care on coping ability, quality of life (QoL), knowledge of diabetes, and metabolic control. Materials and methods : Out of 56 patients with T1 DM followed by Group Care, 27 were randomized to receive an 8-session CCP and 29 controls continued Group Care without a CCP. QoL, knowledge, and coping ability were assessed at baseline and after 30 months. Glycated hemoglobin (HbA 1c ), body weight, blood glucose, hypoglycemic episodes, and insulin dosages were checked every 3 months. Results : QoL improved ( p <0.0001) in both CCP (88.7±9.2 vs78.0±9.9) and control patients (88.7±12.5 vs 80.4±11.7). At the end of study, patients on CCP had better scores in knowledge difference 0.72 (95% CI 0.44; 0.99), p <0.0001 and the 3 coping areas problem solving: 1.75 (1.2; 2.3), p <0.0001; social support seeking: −1.4 (−2.3; −0.48) p <0.005; avoidance: −1.59 (−2.6; −0.56), p <0.005 than controls. All variables showed a greater, although not statistically significant, improvement in patients with poor schooling. At 30 months, HbA 1c was lower in the CCP patients than controls (7.2±0.9 vs 7.9±1.4), p <0.05. There were no changes in insulin dosage, hypoglycemic episodes or blood lipids. Conclusions : This study confirms that Group Care improves QoL in people with T1 DM, but suggests that specific educational and psychological supports are needed to modify adaptation to the disease. The CCP we developed appears effective in promoting change, also in patients with poor schooling.