например, тут о природе гестоза немного написаноhttp://ru.wikipedia.org/wiki/%D0%93%D0%B5%D1%81%D1%82%D0%BE%D0%B7#.D0.AD.D1.82.D0.B8.D0.BE.D0.BB.D0.BE.D0.B3.D0.B8.D1.8F_.D0.B8_.D0.BF.D0.B0.D1.82.D0.BE.D0.B3.D0.B5.D0.BD.D0.B5.D0.B7