Larger Dogs Age Faster, And Scientists May Finally Know Why
Researchers at Arizona State University analyzed DNA methylation data from 894 dogs to explain why larger breeds age faster. The study found that larger dogs lose methylation on LINE1 jumping genes 35 percent more rapidly than smaller breeds annually. This epigenetic decline, which allows these genes to damage DNA, appears to be a primary driver of the size-lifespan trade-off observed in canine aging.
Source: Larger Dogs Age Faster, And Scientists May Finally Know Why — ScienceAlert
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