SMRTR Science & EngineeringAug 31, 2025Interesting Engineering

Cells ‘vomit’ waste to heal and become young again, new study suggests

SMRTR summary

Scientists discovered "cathartocytosis," a cellular healing process where cells "vomit" waste to regenerate after injury. This allows cells to shed old components and revert to a stem-like state for faster tissue repair. Identified in stomach injuries in mice, cathartocytosis helps cells heal by eliminating cellular machinery that would slow regeneration. However, it may cause inflammation, impede chronic injury healing, and potentially contribute to cancer formation. This discovery could lead to new treatments for stomach and GI cancers.

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