A hormone is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Only a little amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from one cell to another. (source: wikipedia)
Estrogen is a vital key to healthy aging. But when a woman’s body undergoes this important change, the accompanying symptoms can be severe enough to disrupt her life – and affect the lives of those around her.