<prompt> Bhala indatshana emfushane enesihloko esilandelayo: UmuntuX uhambisana noMuntuY  <response>: Yebo, nansi isigaba esifushane: ULucas utshela u-Ajay ngesifundo esisha esanyatheliswa kuyi-British Medical Journal. Lolu cwaningo lwathola ukuthi abantu abadla ukudla okunamafutha amaningi basengozini enkulu yokuba nesifo senhliziyo nemithambo yegazi. 