Masanin ilimin gerontologist kwararre ne wanda ya kware wajen nazarin tsufa da sauye-sauyen jiki, tunani, da zamantakewar da ke faruwa ga manya yayin da suka tsufa. Gerontology wani fanni ne da ya kunshi ilimi daga ilmin halitta, ilimin halin dan Adam, ilimin zamantakewa, da sauran fannoni don fahimtar tsarin tsufa da magance bukatun manya. Masana ilimin gerontologists na iya yin aiki a wurare daban-daban, kamar cibiyoyin bincike, wuraren kiwon lafiya, hukumomin gwamnati, da ƙungiyoyi masu zaman kansu, kuma suna iya shiga cikin haɓakawa da aiwatar da shirye-shirye da manufofin da ke haɓaka tsufa mai kyau da haɓaka ingancin rayuwa ga tsofaffi.