 No longer was Haiti under the grip of the minority rich mulattoes, protected by the military and supported by the church; Duvalier now exercised more power in Haiti than ever.On 24 May 1959, Duvalier suffered a massive heart attack, possibly due to an insulin overdose; he had been a diabetic since early adulthood and also suffered from heart disease and associated circulatory problems.During the heart attack, he was comatose for His physician believed that he had suffered neurological damage during these events, harming his mental health and perhaps explaining his subsequent actions.