Diabetes and erectile dysfunction in Morocco epidemiological study among outpatients We studied the relationship between erectile dysfunction (ED) and diabetes among 189 men (> 40 years) attending primary health care centres in Morocco. Of the 89 diabetic men, 82% had ED while only 17% of the 100 non-diabetic men had ED. The frequency of ED among diabetic men increased with age, from 60% in those aged 40–49 years to 94.95% in those aged ≥ 60 years (from 6.3% to 35.4% in men without diabetes for similar ages). ED was reported by 93.3% of diabetic men who had had diabetes for > 15 years. The frequency of ED did not differ with type of diabetes but it was significantly commoner in diabetic men with a low level of education and with hypertension.