Natural remedies such as vitamins E and B6 or ginseng and other foods that contain or mimic estrogen are sometimes recommended, but research as to their efficacy has been limited.See also uterus.See publications of the National Institute of Child Health and Human Development; J. E. Huston and L. D. Lanka, Perimenopause: Changes in a Woman's Health after 35 (1997); Boston Women's Health Book Collec