As Arctic sea ice declines due to climate change, polar bears face extended fasting periods, nutritional stress, and increased human conflict, with profound individual welfare consequences alongside population-level threats.
Climate change is creating a slow-motion welfare crisis for polar bears. Prolonged fasting during ice-free periods causes progressive starvation — a painful, protracted death for individuals who cannot find sufficient food. Cubs born to nutritionally compromised mothers have lower survival rates and may themselves die of starvation. The psychological stress of extended fasting in a species adapted to predictable seasonal cycles is difficult to quantify but likely significant. Bears venturing into human settlements are often killed as public safety threats — a welfare outcome that results directly from climate-driven habitat loss. Unlike most wildlife welfare issues, the solutions are primarily about global greenhouse gas emissions rather than local conservation interventions.