Observational study on mood and cognition in people with Type 2 Diabetes and prediabetes

The Sunnybrook Type 2 Diabetes Study

Observational Sunnybrook Health Sciences Centre · NCT04455867

This study looks at how mood and thinking skills are affected in people with Type 2 diabetes or prediabetes to see what factors might play a role over 18 months.

Quick facts

Study typeObservational
Enrollment500 (estimated)
Ages18 Years and up
SexAll
SponsorSunnybrook Health Sciences Centre Academic / other
Locations1 site (Toronto, Ontario)
Trial IDNCT04455867 on ClinicalTrials.gov

What this trial studies

The Sunnybrook Type 2 Diabetes Study is a prospective observational study that investigates the causes and effects of mood and cognitive complications in individuals with prediabetes or Type 2 Diabetes Mellitus. Participants are recruited from Sunnybrook Health Sciences Centre and the University Health Network Toronto Rehabilitation Institute, where they receive care and participate in a hybrid exercise program. The study includes assessments of cognitive performance, mood symptoms, and various lifestyle factors over a period of 18 months. Data collected will also be linked to public health records to evaluate long-term health outcomes.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with prediabetes or Type 2 Diabetes Mellitus who can communicate in English.

Not a fit: Patients with current cancer diagnoses, severe mental health disorders, or neurological conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of the mental health challenges faced by patients with Type 2 Diabetes and prediabetes, leading to improved management strategies.

How similar studies have performed: Other studies have shown success in exploring the relationship between diabetes and cognitive/mood complications, making this approach both relevant and supported by prior research.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Have at least one of the following: high HbA1c, impaired fasting glucose (IFG), impaired glucose tolerance (IGT), but not yet diagnosed with Type 2 diabetes or have a diagnosis of Type 2 diabetes.
* Be able to communicate in English
* Be 18 years of age or older

Exclusion Criteria:

* Pregnancy
* Inability to give informed consent
* Current cancer diagnosis
* Have a prior diagnosis of bipolar disorder or schizophrenia.
* Have a prior diagnosis of a neurological and/or neurodegenerative disorder.
* Have a current substance use disorder or a previous substance use disorder diagnosed within the last 5 years (excluding nicotine)
* Poor score on the Mini Mental State Examination (MMSE)

Exclusion criteria (Brain Imaging Sub-Study):

* Contraindications to SHSC's MRI safety protocol.
* Participants that do not meet the inclusion/exclusion criteria of the main study.

Exclusion criteria for (Brain Imaging Sub-Study - CVR procedure):

* Use of medical equipment that would interfere with the placement of the CVR mask.
* Significant pulmonary disease (e.g. asthma, pulmonary fibrosis, emphysema, chronic obstructive pulmonary disease, pulmonary vascular disease, pleural disorders, pneumonia)
* Participants that do not meet the criteria for the MRI sub-study.

Exclusion criteria (Sleep Quality and Apnea Sub-Study):

* Participants that have a medical device that would interfere with placement of portable sleep monitor equipment i.e. Participant requires O2 therapy and uses nasal prongs
* Participants that have a condition that may compromise accuracy of the HSAT results i.e. moderate-severe pulmonary disease or congestive heart failure
* Participants that do not meet the inclusion/exclusion criteria of the main study

Where this trial is running

Toronto, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Type 2 DiabetesPreDiabetesMoodCognitionBrain ImagingSleepExercise
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.