Many older adults worry about their memory and other thinking abilities. For example, they might be concerned about taking longer than before to learn new things, or they may sometimes forget to pay a bill. These changes are usually signs of mild forgetfulness — often a normal part of aging — not serious memory problems….
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https://www.nia.nih.gov/health/memory-forgetfulness-and-aging-whats-normal-and-whats-not