Methods of treating an adult mammal for an aging-associated condition are provided. Aspects of the methods include enhancing a TIMP activity, e.g., a TIMP2 activity, in the mammal in a manner sufficient to treat the adult mammal for the aging-associated condition. Also provided are compositions for use in practicing methods of the invention. A variety of aging-associated conditions may be treated by practice of the methods, which conditions include cognitive impairments.
