People most particularly the women are aware about the fact that Estrogen patches can cause uterus or ovarian cancer. This is especially in the case of people who are recommended to undertake a long term Estrogen treatment. On the other hand, study shows that Estrogen patches reduce the risk of heart diseases but it is not strongly recommended for people to use it as an alternative for heart diseases because there is no sufficient proof supporting the study yet. As mentioned in the American Medical Journal Association dated in 1966, according to Dr. H.M. Lemmon, M.D. there is a higher concentration of this particular substance in the body of those women who does not have breast cancer. It is very beneficial to the vagina, vulva and cervix. In cases where there is a related affliction to the mentioned parts, it is safest if the patient is going to use Estriol Estrogen preparation. There is no doubt that Estrogen creams help solve some hormonal problems of a woman. But, along with the benefits that it can bring you are the side effects that can cause higher risk to a person. Estrogen cream has a very rich history in the field of dermatological products and is really proven effective in curing hormonal and vaginal disorder. However the consequences, advantages seem to outnumber them. The use of conjugated estrogens is usually known for significant drop in the occurrence of heart disease and osteoporosis, including a decrease of approximately 10% in the incidence of heart disease and stroke, over non-estrogen users. The levels of PA-1 are discovered to plunge down by around 50% when an intake of Conjugated estrogens is done with or without the presence of progestins. For instance, when a person is using conjugated estrogen, which is commonly used in the United States and falls under the brand name of Premarin, and Cenestine the sufficient intake should fall from .3 to .625 mg/ day. The dosage is entirely different when the person is taking estrogen prepared by using synthetic Estradiol and the brand name is Estrace, research showed that adequate dosage is from .5 to 1 mg/day. Estrogen is also essential to normal body function, which is why women should maintain normal estrogen level in the body. Old age can be one of the reasons why women experience irregular estrogen production. Usually, when women reach old age, their body can no longer produce normal estrogen, which may lead to some bothering body malfunctions.