Don't let them get old

I see that my parents are getting old. They have white hairs and this has not trouble them at all. As for my mom she loves to have her hair dye. I willing to help her because I know the color that she likes.

My dad has bad memory now, he always forget things. The older he gets, he will be feeling that he will not want to do anything at all. He told me that he is scare of many things. How can this happen?

Tell me this is not true, when you get older you tend to lose your guts?