well memory loss in old age is really depressing specially in later stages they even lost the sense that when they hungry or they want to pee

Hello, Due to ageing people have to suffer from this kind of problem due to weakness of body cells and hormones. In this situation they must do exercises and take natural supplements.

You are right Alenjacks, as ever and it is important not to get too worried or to panic if these perfectly normal changes start to occur. We hear a lot about Alzheimer's these days including yesterday an important break through allowing scientists to identify people well before they'd develop any symptoms. Although ti is a problem we can be in danger of thinking that anytime we forget a name or what we came upstairs for that we are developing Alzheimer's. Some memory loss etc is, as you say, quite normal with ageing.