I am a newbie here and have made a couple of previous posts.
I thought I might now share this recent experience.
I have been experiencing some tingling and numbness in my right foot and leg for a while. Being a male I obviously ignored it.
It started happening on my runs - but I just kept going.
Just before Christmas I had finished a 25 minute run and was at home ready to take a shower. Suddenly my right leg and right arm went completely numb and I couldn't walk. I was taken to emergeny and after 12 hours there was transfered to the stroke unit. This was in a major hospital here in Sydney.
I was given every test possible and fully wired up to a variety of monitors 24/7. As well as blood tests every day etc etc.
After 5 days they could find nothing wrong - and said I seemed very fit. Nothing on the MRI and other scans. Heart in good order with a low RHR.
The only thing found at all was I had a very low B12 level.
I was discharged and had B12 injections every two days for a fortnight.
Obviously no running for a while, being in hospital etc.
The head neurologist said I shouldn't run for a while - but after the injections the symptoms stopped.
I have started running again - with shorter runs to build up again.
Back to 25 minutes now and no problems.
And since the B12 course, quite a few other issues have cleared up!!
Apparently I am not able to process B12 normally from food - who knew??
So for other runners out there, give some thought to B12. It is vitally important and you probably wouldn't know if you were seriously low.