I don't know. The people I know hwo have, or need replacements need them becasue they have work them out due to so much exercise. One was an avid skier and the othera total fitness nut, runner,tennis player, etc. I think lots of boomers are wearing out due to the physical fitness craze we championed.
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Founder Emeritus of Boomer Women Speak and the National Association of Baby Boomer Women.
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