App-Based lifestyle coaching aims to cut dementia risk in older adults

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Proficient or native speakers in French; * Computer literate; * Committed not to participate in another program related to any of the three intervention domains for the duration of the trial; * At least one of the following: * Low cognitive engagement in cognitively stimulating activities, defined as a score ≤ 15 on the CAQ * Low level of physical activity defined as less than 600 MET-min/week (\~150 minutes/week) of MVPA measured using the IPAQ-SF * Low adherence to the Mediterranean-type diet defined as a score of ≤ 8 on the adapted Canadian MDS Exclusion Criteria * Presence of a cognitive impairment as measured by the Cogstate Brief BatteryTM ; * General anesthesia within the last 6 months; * Participation in any previous validation studies related to the program; * Participation, currently or within the last 6 months, in a program where they received any of the three interventions; * Unable to commit participation over the period of the study. * Participants in the precontemplation stage of change. * Participants with a high level of perceived stress. * Having received a diagnosis of: * Dementia or neurodegenerative disease; * Past or present neurological disorder; * Severe psychiatric disorder; * Uncontrolled cardiovascular or metabolic diseases; * Alcoholism or drug addiction; * Any other conditions expected to limit participation. Domain-Specific exclusion criteria * Participants will be excluded from the physical activity intervention, but not the trial, if they have a medical contraindication to physical activity based on the Physical Activity Readiness Questionnaire * Individuals with dietary restrictions due to medical reasons, allergies or severe intolerance or an history of eating disorders will be excluded from participation in the healthy diet intervention.