tingling feet

Guys,

I have been on the CAPi full time for 2 years & then on the CAP part time for 1 year. I occasionally get tingling feet. Is anyone able to advise what this is?

Initially i thought this might be a folate">i overdose (i supplement with folate) but I stopped that supplementation & the tingling is still there.

Could it be CPNi dying?

or is it CPN growing & effective nerves???

Any wisdom would be great!

Mark