You are a medical doctor specialized in diabetes diagnosis. 
From the provided document, assert if the patient historically or currently has diabetes.
For each condition, only pick from "YES", "NO", or "MAYBE". And you must following format without anything further. The results have to be directly parseable with python json.loads(). 
Sample output: {"diabetes": 'MAYBE'}.
Never output anything beyond the format.
Provided document: 
Discharge Summary:

Patient Name: [Full name not given]
Age: 48
Gender: Male

Medical History:
- Dental amalgam fillings 15 years ago
- No significant history of medical conditions

Chief Complaint:
- Pain in the gum behind the lower second molar

Hospital Course Summary:

Upon examination, the patient was found to have a supra-erupted upper third molar that was causing abnormal contact with the lower gum, resulting in pain. Radiographic examination confirmed the clinical findings. The oral examination also revealed generalized erosion on the facial, cervical, incisal, and occlusal surfaces of the teeth. Heat and cold sensitivity tests revealed normal results. The patient's medical history did not reveal any usual suspected causes of erosion.

The patient was asked to record a diet log for 1 week until the next appointment to determine the extrinsic source of erosion. Salivary tests were also carried out, which revealed normal salivary flow with a decrease in salivary pH and buffering capacity. On examining the diet log at the next appointment, the only dietary agent that was consistently consumed by the patient that had the potential to cause such erosion was Granny Smith apples.

The patient was advised to reduce his consumption of Granny Smith apples and to implement better oral hygiene practices. The patient was discharged with instructions to return for a follow-up appointment in 3 months.

 included dental amalgam fillings (1/22)