Are lonely people harder to retain in a program once they enrol?
The research corpus does not contain any studies evaluating whether loneliness predicts program retention once a person has enrolled. The idea that lonely individuals are harder to retain is intuitive but currently unsupported by evidence. The closest available evidence pertains to general uptake rather than loneliness specifically. A study of individuals offered telephone health coaching found that while only a minority consented to participate, the majority of those who did consent went on to complete the program. This finding describes general engagement patterns and cannot be used to characterize the behavior of lonely populations. Regarding broader health engagement, the corpus establishes a consistent dual pattern. Socially disconnected individuals show lower uptake of preventive services, yet they also exhibit a higher volume of care contact, including more physician visits and greater use of urgent care. These findings describe engagement with the health system at large but do not address retention within specific enrolled programs. The corpus covers health care utilization and preventive service uptake, but it contains zero studies on program retention for lonely participants.