When we get old the level of hormone declines. Sometime hormones replacement is necessary but this process can cause of prostate cancer. If you want to do the replacement therapy, you have to be careful, you should consult  the doctor
    There are two major hormone in our bodies. One is estrogen and another is testosterone.
Testosterone  is important both of men and women . The high level of this hormone is needed for men. This hormone make the men younger and be good in sexually . This hormone can also promote the facial hair, larger muscle and deeper voices . But on the other way, too much testosterone can have side effect . If you want to take the replacement hormone therapy, you have to consult the doctor.
    Estrogen is one of the hormone that the body need to keep up with life. Taking this can be an advantages and disadvantages. Estrogen can reduce some disease but sometime it can  lead to breast cancer. Sometime when you take estrogen , you will have the affect on your heart . You will have endured heart attacks and stroke . So you should consult the physician before taking replacement therapy.
    Melatonin  will be  slow down when you get old. If you lack of this hormone , it will be hard for you to sleep. This hormone help you to reduce the risk of breast cancer and help to reverse aging . For side affect , it can cause the blood vessels to constrict so taking this supplement , you should consult the doctor.
    When we talk about the healthy aging we know that there are many factors that interrupted the bodily functions that affect to body and mind. They are from the environment , doctor , smoking and so on. But don’t forget that we have to review normal aging verse abnormal aging.