Do "sugar Swings" Impact the Brain Function and the Eating Behaviors of People with Type 1 Diabetes

All assessments will be done in virtual mode through secure platforms (but also offered in person in Quebec City if needed to limit discrimination).

The study will start with an inclusion visit during which self-reported and medical data will be collected as well as some anthropometric parameters measured. Following the visit, the participant will be asked to wear a continuous glucose sensor provided by the investigator (Dexcom®) to perform a continuous glucose recording for 10 days. During this 10-day period, the participant will be required to complete:

• A food diary during 3 weekdays and 1 weekend day using the Keenoa® app.
• 3 online sessions combining questionnaires (using the Redcap platform) and computerized tests (Inquisit® platform). Each session will last approximately 45 minutes (can vary between 30 and 60 minutes).

Participants who wish to participate in the qualitative phase of this study will also be offered the opportunity to do so. Participants will be recruited consecutively until a total of 50 are reached. For this part of the study, an individual interview will be conducted by a professional specifically trained in this method of analysis. This meeting will last on average 1.5 hours, but may last up to 2.5 hours depending on the length of the discussion. There will be an audio and video recording of this meeting. The discussions will then be transcribed into text and analyzed.

Inclusion criteria

• Type 1 diabetes (> 12 months)
• Age between 18 and 65 years old
• 6.5 % < A1C < 9% (to avoid potential severe eating disorder)

Exclusion criteria

• Type 2 diabetes or other form of diabetes; gastroparesis (clinical diagnosis);
• Recent (< 6 months) major cardiovascular event (e.g. myocardial infarction, cerebrovascular accident, major revascularization)
• Recent (< 12 weeks) severe hypoglycemia episodes (<2.8 mmol/L or assistance from a third party)
• Recent (< 12 weeks) changes in insulin type or delivery method
• Automated Insulin Delivery
• History of severe brain trauma, epilepsy, schizophrenia or bipolar disorders
• Inability to use a computer
• Incorrect vision or auditory problems