Table 2.

Description of the 12-week online program delivered through the Body Brain Life (BBL) trial website

Week	Activity	Description
1	Module 1: Dementia literacy	The first module focuses on providing participants with general information about dementia including types, onset, symptoms, diagnosis, progression, burden and risk factors (modifiable and non-modifiable). This module serves as an introduction to the subsequent modules.
2	Module 2: Dementia risk factors	This module is aimed at building awareness and knowledge of the various health conditions associated with an increased risk of Alzheimer’s dementia (AD). Specifically, this module provides details regarding the association between AD and several medical conditions (abnormal weight, high cholesterol, diabetes, hypertension, and depression), as well as lifestyle factors (physical activity, nutrition, social and cognitive engagement).
3	Module 3: BBL FIT - physical activity	This is a theory-driven, individually-tailored module that aims to help participants incorporate regular physical activity into their daily routine and reduce sedentary behavior. This module targets several risk factors concurrently, including sedentary lifestyle, abnormal weight, depression, and various medical conditions.
4	Module 4: BBL nutrition	This is a theory-driven, individually-tailored module aimed at helping people develop healthy dietary habits. This module targets the risk associated with abnormal weight, and the protective effects associated with fish intake and with other dietary components.
5	Module 5: BBL connect - social engagement	This is a theory-driven, individually-tailored module aimed at increasing participants’ levels of social engagement. The module targets the risk factor for dementia associated with depression, and the protective effects of regular social engagement.
6	Module 6: BBL Think - cognitive engagement	This is an individually-tailored module aimed at increasing participants’ levels of engagement with mentally stimulating activities, which is a protective factor against dementia.
7	Module 7: BBL health self-management	This is an individually-tailored module aimed at increasing participants’ health monitoring and management of chronic health conditions. Because several chronic health conditions are associated with increased risk for dementia, prevention and appropriate management of such conditions is also likely to be protective against dementia.
8 to 12	Self-guided online activities	During these sessions, participants are encouraged to engage in a range of online activities for 1 h, including accessing the many tools they have accumulated during the first 7 weeks. Examples include the goal-setting tool, behavior-monitoring tool, unhelpful thoughts monitoring tool, videos, and so on.