A general question... in a family with autism history.
I don't really want to go into too much detail at this point because it's not about me.

What are we looking at here consistently over a period of 8 years in one family member in particular?

High Red Cell Folate
Low B12
Always borderline anaemic.

Memory problems.
Energy problems.
Cognitive problems.

Most information I've found tends to indicate that low red cell folate is more common with low B12 levels. Is that correct?

Then I find information suggesting that if red cell folate is high then B12 levels will be low. Very confusing to a novice.

What is going on here? Any suggestions where I can look that may help us understand what is going on here?

I'd also like to know if a person who has extremely low B12 for a number of years and it has gone unrecognized by doctors can eventually recover?

We're thinking about running some genetic testing.