Folk som er fysisk aktive på fritida synes å være biologisk yngre enn folk med stillesittende livsstil, ifølge britiske forskere.

Vi vet at mangel på fysisk aktivitet øker risikoen for flere sykdommer, og dermed kan forkorte våre liv.

Det gjelder for eksempel risikoen for aldringsrelaterte sykdommer som hjerte- og karsykdommer, type to diabetes, kreft, høyt blodtrykk, overvekt og beinskjørhet.

Nå antyder en ny forskningsrapport at vårt aktivitetsnivå også påvirker de biologiske prosessene knyttet til aldring direkte, og at det synes i genene.

- Inaktivitet kan minske forventet levetid, ikke bare ved å gjøre oss predisponert for aldringsrelaterte sykdommer, men også fordi det kan påvirke selve aldringsprosessen.

Det skriver forskerne i en artikkel som er publisert i Archives of Internal Medicine.

Tvillinger og telomerer

Undersøkelsen tok for seg nærmere 2 500 tvillinger, som ble spurt om fysisk aktivitetsnivå, røykevaner og sosioøkonomisk status.

Studiens deltagere ga også blodprøver slik at forskerne kunne hente ut DNA, for å undersøke telomerlengden i de hvite blodcellene.

Les mer på www.forskning.no

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