Growing Old on the Margins is a moving portrait of aging at the edge of social life. Set in a state-run shelter for older adults in urban Lima, Peru, the book traces the everyday lives of men and women who have been left behind by family, institutions, and the promises of care. Based on more than two years of close ethnographic engagement, it follows residents as they navigate loneliness, illness, intimacy, and the quiet anticipation of death. Through small gestures—shared silences, requests for affection, moments of tenderness and conflict—the book reveals how people strive to remain present in a world that offers them little reason to hope. Care appears here not as a simple act of kindness, but as a fragile and uneven practice, shaped by scarcity, power, and moral ambiguity. Attentive to suffering without romanticizing it, Growing Old on the Margins reflects on what it means to age, endure, and remain human when one’s life is no longer considered worthy of attention.