Black cumin oil benefits for disrupted menstrual period, infertility, mastopathy, inflammatory infections and cancer in women's reproductive system. Breast-feeding women are advised to eat black cumin oil to facilitate lactation. They can oil cracks in their nipples to cure them. Black cumin oil contains phytoestrogens helpful in case of hormonal disbalance. Phytoestrogens are non-steroidal vegetable compounds that can effect a human body both as oestrogens and as anti-oestrogens. For example, unlikely to the real oestrogens they do not stimulate the growth of hormone-dependant tumours, but suppress them. Such a dual effect is caused by the nature of phytoestrogens. These plant substances can trigger the same receptors (special proteins structures on the cell surface) as oestrogens do. However, phytoestrogens are (500-1000 times) less aggressive. Thus, if the estrogenic level is low, phytoestrogens join free receptors. If the estrogenic level is high, phytoestrogens compete usual oestrogens, take receptors and cause androgenic effect. Now you know that phytoestrogens may not always be useful. Women with the normal rate of sexual hormones shall not misuse products with high content of phytoestrogens. Yet, black cumin oil does not have a lot of them. Its healthy effect is built on combination of all the components. Nonetheless, to improve your health you should take no more than 1 teaspoon of the oil to prevent excessive rate of phytoestrogens.