Prolonged sitting has been recognized as a major health hazard. A new study in the British Journal of Sports Medicine takes this connection to another level. Reductions in sitting time appeared to have greater impact than increases in physical activity.
The researchers examined the effect of physical activity on telomeres, a protective cap on our genetic storage units that shrink with aging. This telomere deterioration is associated with the diseases of aging and shortened lifespan. Reduced sitting time was linked to telomere lengthening.