Taking tabs as doctor said I was low on iron, but my tiredness is extreme at the moment, everything is an effort. Nothing showed up on tests at the doctors. I sleep soundly at night for about 7-8 hours and have a sleep in the afternoon as well, but I am tired all the time
Well.....if all the tests were negative (Thyroid tests included?) and your iron was low ( you don't say why), my guess is that it is your anaemia causing your tiredness.
I am early 60's. I like to walk every day. Doc asked if I was a veggie, I said no not really I don't eat a lot red meat though as I prefer chicken and fish, I eat a good diet , fruit and plenty veg.