Indicative vaginal waste and vaginitis and waste changes of the lower urinary tract with irregular and inconsistent urination are reversible with the estrogen therapy. In order to avoid osteoporosis, it requires estrogen replacement. What are the disadvantages of the estrogen therapy? 1. It increases the threat of uterus cancer 2. Since Estrogen therapy has the long term and the short term period, it must be noted that lower dose of medicine should be taken for the long term in order to reduce the risk. It is also necessary that you see your doctor at least twice a year while you are taking the medication to avoid complications. Recent clinical tests of estrogen in postmenopausal women with symptoms of Alzheimer s disease have not presented any effects. Other beneficial effects of estrogen are: Reduce night sweats Reduces the risk of colon cancer Improves pelvic musculature Avoid loss of collagen in the skin However, besides its promises, estrogen has also increased the number of severe concerns because there are dangerous effects that could possibly happen with some women. Some of the patients can be prone to more side effects especially if Estrogen patches are not suited for them. Most common side effects of Estrogen patches are skin irritation, back pain and sometimes headache. Sometimes you will also experience bloating and abdominal cramps but these are very rare side effects. Usually, the normal menstrual cycle in a woman s anatomy last for twenty eight to thirty days. During this period, estrogen is found in a normal state. However, if menstruation is noted, that is the time where estrogen is found in a higher level. This is normal because of the release of corpus letuem found inside the eggs cells during this stage. Hormone replacement therapy is also essential for women who are experiencing menopause. Natural estrogen level also helps in the prevention of osteoporosis. There are certain components of estrogen that helps in bone formation and bone nourishing as well. Scientists have proven that women who have normal estrogen level in the body are less likely to suffer from osteoporosis.