Doctors recommend to use folic acid in the first weeks of pregnancy to prevent defects of nervous system at a fruit. However scientists from University of Adelaide (Australia) have found out that the women, continuing to accept this substance on late terms of pregnancy, give birth to children who have subsequently an asthma is more often.

550 women participated in research. Results of supervision over them have shown that an asthma children of those examinees who have started to drink folic acid before conception did not suffer, but have stopped reception in the first weeks of pregnancy. And at those who continued reception of additives with 16th till 30th weeks, children on 30 % risked more to get chronic disease of lungs.

In the beginning of pregnancy reception of folic acid is necessary, that the future children did not suffer a backbone crevice — defect of pre-natal development at which at the newborn the part of a spinal cord and its covers gapes through a crack in a backbone. The basic symptoms of defect are the paralysis of the bottom finitenesses, an incontience of urine and the delay of intellectual development caused usually by a hydrocephaly.

Animals and the person do not synthesise this water-soluble vitamin of group B, receiving it together with food or thanks to intestines microflora. Folic acid contains in green vegetables with leaves, bean, brown rice, bread from a flour of a rough grinding, yeast, is a part some honey. In many countries the legislation obliges manufacturers of flour products to enrich their folic acid.