Hormonal
Somatic mitochondrial DNA (mtDNA) mutations drive progeroid (premature aging) phenotypes in mammals primarily through the dysfunction of somatic stem cells, rather than through the accumulation of oxidative damage.
Focus on maintaining overall metabolic health and physical activity, which naturally supports mitochondrial function and stem cell health. Do not rely on antioxidant supplements to reverse aging, as evidence suggests they may be ineffective or harmful. The key takeaway is that cellular maintenance (like stem cell health) is more critical than simply neutralizing free radicals.
Experimental evidence strongly suggests that the high number of mtDNA point mutations in mtDNA mutator mice leads to the synthesis of RC subunits with amino acid substitutions that cause instability of the RC complexes... The early onset of dysfunction of somatic stem cells is thus an early event in the mtDNA mutator mice and may drive important premature aging phenotypes.
Why this rating
Based on strong genetic mouse models (mutator mice) and direct observation of stem cell dysfunction, though human relevance is noted as still requiring verification.
Source
The role of mitochondria in aging
Ana Bratić et al. · Journal of Clinical Investigation · 2013
DOI 10.1172/jci64125
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