Binciken COSMOS na tsawon shekaru biyu kan mutane 958 ya nuna cewa shan multivitamin na Centrum Silver a kullum yana rage saurin tsufar epigenetic da kimanin 0.1–0.2 shekara a kowace shekara idan aka kwatanta da placebo. Tasirin ya fi bayyana a wurin masu tsufa da sauri, yayin da shan cocoa da 500 mg flavanols ba su yi wani tasiri ba a kan agogo biyar da aka gwada. Duk da cewa bambance‑bambancen suna ƙanana, har yanzu ba a tabbatar da mahimmancin su na kliniki ba.
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