Resilience

Human-Condition · Mental-Processes

⚡ Why does purpose change your mitochondria?

In cultured fibroblasts, Martin Picard (Columbia) saw glucocorticoid stress raise cellular energy spend about 60% (dish cells, not your whole daily metabolism). Your body runs on a fixed energy budget that rumination and threat can overdraw.
Mitochondria are ancient symbiotic bacteria; trillions of them turn food and oxygen into the electricity that powers thought and movement.
Postmortem brain work (Trumpff et al., PNAS 2024) correlates a stronger sense of purpose with more efficient mitochondria (not causation).