Premenopause is part of natural aging process in women indicated by the decrease of ovarial estrogen production. and usually followed by development of menopausal syndrome. Susumeno. skim milk fortified with 100 mg of soy isoflavone and 8 mg of Zn was given to premenopausal women for decreasing menopausal syndrome. https://halohealthcarers.shop/product-category/personal-hygiene/