Cantani's third patient, Mr Nicola Cardinale, a priest, was guilty of "abuse of flour for a year" and Cantani realized the priest was eating carbohydrates during mass and thus forbade him from celebrating it.
May 3, 1870
Diabetes Mellitus and its dietetic treatment
OBSERVATION III. - Mr. Nicola Cardinale, priest, 65, received at the Clinic on May 3. Diabetic by abuse of flour for a year, with large soil, polyuria, weight loss; he too had been following our treatment for two months, but not with sufficient rigor, and he continued to have 74 gr. of sugar per liter of urine, total amount for 24 hours; specific weight 1028. Subjected to the full rigor of treatment, it improved rapidly, but persisted in presenting 4 to 8 gr. of sugar per day. After having studied the causes of this singular persistence, I forbade him to celebrate mass. The sugar disappeared immediately. This fact shows to what excess of rigor this treatment must be carried out in advanced cases of diabetes. The urine went down as a weight to 1014. This patient weighed on entering 49kil, 5, after six weeks 50kil, 2; in view of his advanced age, the declared senile marasmus, this increase in weight is not to be despised.