This paper reframes climate change as not just an environmental crisis, but as a severe psychosocial one, uncovering a dangerous bidirectional dynamic: climate change threatens our “social health” (i.e., our ability to maintain meaningful human relationships), which impacts our capacity to adapt and survive. Synthesizing global, interdisciplinary evidence, the authors track how disasters and slow stressors (e.g., extreme heat, droughts) push people indoors and damage, disrupt, and erode public spaces where community networks thrive. Because the article is a narrative literature review and not a systematic one, it may be at risk of selection bias. While the reviewed literature feels rounded and comprehensive, this methodological consideration slightly limits the evidence base and empirical weight. However, that said, the article excels in equity. The authors highlight a widening “social health gap,” detailing the “double burden” on marginalized groups facing high climate risks with the weakest social safety nets. Crucially, it avoids fear-mongering by showing how robust, pre-existing community structure influences collective climate action. The overall takeaway is a paradigm shift: if social erosion is an active driver of vulnerability and not just a byproduct, then social connection must be seen as vital “infrastructure” requiring policy investment to combat the psycho-social-ecological polycrisis. Ultimately, we learn that community cannot be manufactured amidst catastrophe.