to be low in B6. Especially a male. Do you eat meat?
Meat has B6 in it. Bananas are also a prime source.

Who gets low in B6? Some drugs deplete it.
INH (not commonly used except for TB)
diuretics (for blood pressure, to reduce edema)
and many antibiotics (taken long term).

Anything there look familiar to you?

What else? Well, people with a disorder of heme production called pyroluria, get very low in B6. Along with B6 loss is also zinc. This is a benign condition but it does deplete these two nutrients, sometimes severely. It is diagnosed by urine test.
You can read more about it here:
http://www.drkaslow.com/html/pyroluria.html

Did Dr. Latov do a B12 on you? Do you know the number? I'd get that and post it here. Also have him run a Vit D test on you. Many people are found very low in Vit D these days. There is a huge movement to identify these people to prevent disease:
you can read more here:
http://www.vitamindcouncil.org/

Be sure to check your B12 levels, and be advised that Dr. Latov's new book has TWO pages of errors in it about B12.
While he does use some nutritional supplements, he did not proof read his own book, (or write it correctly).

And since you are having a problem with B6, I'd suggest you use the activated form of it...called P-5-P. This works better than regular B6 which requires activation in the liver by pyridoxal kinase.
This is one brand, but there are others, example by NOW company. You only need one a day of these.
http://www.vitaminshoppe.com/store/e...jsp?id=SL-2074
Some local stores may have this, but it should be available online. www.iherb.com has a selection as well.