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What's it called when you age quickly? Understanding Progeroid Syndromes

According to the National Organization for Rare Disorders (NORD), Hutchinson-Gilford Progeria Syndrome, or HGPS, affects an estimated 1 in 4 million newborns worldwide. This condition is the most famous example of what's it called when you age quickly?, along with other genetic disorders known as progeroid syndromes, which cause the body to exhibit many signs of aging at an accelerated pace.