Research
Micronutrients & recovery
Oxidative stress accelerates telomere shortening disproportionately compared to genomic DNA due to telomeric DNA's poor repair capacity for single-strand breaks.
Telomeres are more vulnerable to oxidative damage than the rest of your DNA because they are harder to repair. Reducing oxidative stress (e.g., through diet and lifestyle) may help preserve telomere length.
GoodSupportsHIGH confidence
In marked contrast to genomic DNA, telomeric DNA is not very proficient in repair of single strand breaks. This leads to a telomeric accumulation of single strand breaks in cells during G0 and G1 phases, and such breaks constitute a stalling hurdle for DNA replicating polymerases. As a result, telomeres shorten disproportionably faster than normal during the first cell cycle after single strand break accumulation.
Why this rating
The mechanism is well-established in the literature cited (references 2-4) and described as a clear biological fact in the text.
Source
Telomeres as Biomarkers for Ageing and Age-Related Diseases
Thomas von Zglinicki et al. · Current Molecular Medicine · 2005
narrative_reviewCited 386×
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