Yes imps, it also assumes that we all have a diet deficient in folic acid. High sources of folic acid are whole wheat bread, whole wheat pasta, breakfast cereal, orange juice, pineapple and grapefruit juice, spinach, aspargaus, Enriched white bread, Enriched pasta, cooked lentils, Black-eyed peas, Pinto beans or chickpeas,
Sunflower seeds, Okra, Asparagus - broccoli i think- and a whole load of other foods in most of our everyday diets. In fact, we're probably all overdosing!!!
scarlet, i'm still smiling thinking of your BFP, can't imagine how delighted you and DH are. We're just back from the playground with a DD in her cot, knackered. I kind of want to POAS tomorrow but i'm very scared it'll be a BFN not sure when to use my one-and-only test, so maybe I should celebrate yours again tmw morning and wait a bit longer....
opinons please 
*little8, you are going to sort that luteal phase out no prob at all with your b-vitamins, Brooking will fit like a glove especially once you get your BFP this month