Progesterone

Progesterone is a steroid hormone. 

In animals, it is made from cholesterol. It is the base for certain estrogens and androgens. In animals, it is produced by their body mainly during the second half of the menstrual cycle. 

During pregnancy it is produced in higher quantities.
Willard Myron Allen co-discovered progesterone with George Washington Corner at the University of Rochester Medical School in 1933. Allen discovered the temperature needed to melt it and its weight. He also gave it the name "Progesterone" based on progestational steroidal ketone.http://pt.wkhealth.com/pt/re/lwwgateway/landingpage.htm;jsessionid=R2dc47m048bxLF2j9vg9nZGkV4LPQ9X4PTkhCqCVdsC7dJrhTPPm!1612949135!181195629!8091!-1?sid=WKPTLP:landingpage&an=00007611-197010000-00012
In one plant, Juglans regia, progesterone has been found. Also progesterone-like steroids are found in Dioscorea mexicana.http://buynaturalprogesterone.co.uk/
Progesterone level is low in children and postmenopausal women.

Biosynthesis

Related pages 
 Steroid
 Oestrogen

References

Category:Steroid hormones
Category:Menstrual cycle