Punctuation is there to help the reader make sense of what is written. Often it is best to change the sentence so that the meaning does not rest on a comma. 1  He went to town, but not because his father was away.
Hormone: A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Many hormones are secreted by special glands, such as thyroid hormone produced by the thyroid gland.Hormones are essential for every activity of life, including the processes of digestion, metabolism, growth, reproduction, and mood control.any hormones are secreted by special glands, such as thyroid hormone produced by the thyroid gland. Hormones are essential for every activity of life, including the processes of digestion, metabolism, growth, reproduction, and mood control.
Estrogen refers to a group of hormones that play an essential role in the growth and development of female sexual characteristics and the reproductive process. Estrogen is probably the most widely known and discussed of all hormones. The term estrogen actually refers to any of a group of chemically similar hormones; estrogenic hormones are sometimes mistakenly referred to as exclusively female hormones when in fact both men and women produce them.