I am starting to get a little concerned about my health, for the last few weeks I have been feeling very achy and tired and sometimes have had pain in my knees and hands, generally feeling tired, I do have quite a physical job though, I don t have any other symptoms, just those, on my days off I feel very lathargic and don t feel like doing anything. I did wonder if I am lacking in iron or something. I am starting to think about going for a check up at my doctors. I am 48 yrs old. Can you shed any light on this? S. Weston