Over the last two years my father's memory has deteriated considerably. At Xmas he had the quick home examination organised by the local GP. They said there was nothing wrong, but he cannot for example remember where the lawn mower is kept, what is a plant or weed (he was an expert gardner) but can however remember meeting a firend's parents 25 years ago He thinks it's just old age is he correct ?? is there any thing we can do ???.