However, in some cases there are still some of them who gives birth to the so-called menopausal babies. While a woman is entering the menopausal period the level of Estrogen is affected. This is a kind of hormone that plays a very important role in the female reproductive system. Thus, if the level of this hormone reduces there is a tendency that a woman will suffer from various disorders. At such period, oestrogen support the development of secondary female sex features, such as breasts, and are also involved in the thickening of the endometrium and other aspects of regulating the menstrual series. Sources of oestrogen include the ovaries, the corpus luteum, and the placenta. Smaller amounts of it are found in the liver, adrenal glands, and breasts. Other foods such as Alfalfa , Animal flesh, Baker's yeast , Beets , Dairy Foods, Dates, Eggs, Fennel , Hops , Oats , Olive oil, Olives, Plums , Rice , Sage , Wheat , Yams , and others. These are the foods you need to supply your body with natural estrogen. If your body contains less than the required amount of estrogen, eating these foods can help your body produce the necessary amount of estrogen. Do you know the possible reasons why such problems are happening to you? If you do, then perhaps it can be recovered or better yet be prevented. There are many probable causes of hair loss. For instance, there is high fever, serious disease, pregnancy, too much stress, and the most common, estrogen deficiency all of which can cause you to have hair loss. In order to prevent this, hormone replacement therapy must be made. However, the therapy is only good for women who has estrogen deficiency and wants to prevent her self from having a cardiovascular disease. These two disease both need immediate treatment. Though the first disease will is not a killer disease, it can also make your life difficult to lead on. It increases the threat of breast cancer especially when used for over 10 years. 3. It can be very dangerous for women who are more prone to blood clotting. 4. It can give headaches or migraines 5. It increases the threat for endometrial cancer 6. It can destroy the liver With all these advantages and disadvantages presented, it all depends to the person if she wants to have the therapy.