During autophagy, a cell digests itself, primarily breaking down damaged proteins and mitochondria.

The claim that "during autophagy, a cell digests itself, primarily breaking down damaged proteins and mitochondria" is supported by a substantial body of literature, despite the sources being categorized as "Not Trusted." Autophagy is indeed a cellular process that involves the degradation of intracellular components, including damaged proteins and organelles such as mitochondria, through lysosomal pathways. Multiple sources consistently describe autophagy as a mechanism for maintaining cellular homeostasis by removing dysfunctional components, which aligns well with the claim. The process is crucial for cellular quality control and has implications for various biological contexts, including stress responses and disease states. While the sources lack the credibility of peer-reviewed journals, they collectively reinforce the understanding that autophagy serves as a self-digestive mechanism that is vital for cellular health.