Progesterone is probably one of the most important hormones in the endocrine system. Progesterone runs the entire endocrine system. If any of the hormones are out of balance chances are the progesterone is out of balance too.
This is an analogy of how I like to compare what progesterone is and how it works. The hormones in the body are like a fine-tuned symphony. Each hormone is representing an instrument. If the hormones are in balance, then everything hums along (like instruments being in tune and making beautiful music). Progesterone can be compared to the cymbals. If progesterone is out of balance (from taking chemical hormones or other reasons) the cymbals are replaced by trash can lids.
If you try to play a piece of music in a symphony and use trashcan lids instead of the beautiful cymbals it will be an irritation to the song – it won’t sound right – it doesn’t work right. Much like if progesterone is out of balance in the body – something just isn’t quite right.
Because progesterone runs the show with the endocrine system, often if there’s a hormonal issue, just balancing the progesterone alone will often help to cure the other issues, including thyroid dysfunction.
Progesterone is made in our body from cholesterol. In women it’s also produced by the corpus luteum at the ovary after ovulation. Its primary purpose aside from dictating the entire endocrine system is to help maintain the uterine lining for pregnancy. A deficiency in progesterone can cause PMS, miscarriage, preterm labor and premature birth. After delivery a deficiency can cause post partum depression.