From the day you go vegan, you should begin to supplement with vitamin B12 or use a variety of fortified foods. Absorption of B12 drops dramatically as the dose goes up, so if you are supplementing just once a day, you need a fairly high amount—at least 10 ug per day. (If you hav...
In 1992 the USPHS recommended that all women who were planning a pregnancy or who could become pregnant consume 400 micrograms of folate a day. In the United States about one-half of pregnancies are not planned. Study after study showed that despite major educational efforts, many fewer than ...