Supportive social interaction interventions are frequently utilised to promote mental health, and they are increasingly involving the use of digital technologies. Interventions must have a strong theoretical foundation in order to achieve their goals and avoid unexpected consequences. There are several theories tying social ties to mental health in the literature, however the selection of an acceptable theory is complicated by the diversity and overlap of these theories. The goal of this research was to thoroughly analyse and synthesize theories linking social ties to mental health in order to extract essential theoretical assumptions that could be used to explain what was happening.The effects of social relationships on mental health, and the conditions that distinguish positive social relationships from those that have no effect or are harmful. The synthesis' findings are examined in the context of general interventions, with implications for the use of digital interventions as novel instruments to improve social relationships and mental health drawn out.
