Estrogen is one of the main female sex hormones, along with progesterone. The former is responsible for various processes in the female body and is the hormone most responsible for physical characteristics. Estrogen is present in males as well but in much smaller amounts. There are many reasons for fluctuations in estrogen production, and it is often temporary. Because estrogen is such an important hormone, having too little or too much for an extended amount of time can lead to a variety of health issues.
All hormones act as chemical messengers that travel throughout the body, carrying information and instructions to every cell. Most estrogen is produced in the ovaries, although the adrenal glands and fat tissue also make small amounts.
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