As with any change, things start slowly. It can be tough sometimes to know how much to worry about and what things you really should pay attention to as your parents get older. For example, everyone's memory slips. But if your thoughts are on aging, it might first jump to alzheimers. And maybe that's right... and so what? You should worry enough to have a quick discussion with your mom or dad about lapses but not jump to conclusions or conduct your own medical assessment!