Progesterone & Pregnancy

Progesterone & Pregnancy
March 25, 2018 Writing Department


Interestingly, the word progesterone is given its name because of its vital supportive role in gestation (Latin: gestare), a fact that sheds some insight into its importance in pregnancy and the reproductive process.

Modern science confirms that insight, as, of all female hormones, progesterone is the one most essential for conception and to the survival of the fertilized egg and the fetus throughout gestation. It is necessary for full-term pregnancy.

At ovulation, progesterone levels rapidly rise from 2-3 mg/day to an average of 22-25 mg. per day, peaking as high as 30 mg/day.

If fertilization does not occur in ten or twelve days, progesterone levels fall dramatically, triggering the shedding of the secretory endometrium (the menstrual cycle). If pregnancy does occur, however, progesterone production is taken over by the placenta which secretes an ever increasing supply, reaching 300-400 mg/day during the third trimester!

Among the numerous other desirable effects of Natural Progesterone are the following:

  • Makes Possible the Survival of the Fertilized Egg (successful pregnancy)
  • Maintains the Secretory Endometrium which Feeds the Ovum & Resultant Embryo (full-term pregnancy)
  • Progesterone Surge at Ovulation is the Source of Libido

Because progesterone is essential to prevent the premature shedding of the supportive secretory endometrium, a significant drop in progesterone levels or blockade of progesterone receptor sites during the first 10 – 12 weeks of pregnancy may result in the loss of the embryo (failed pregnancy or miscarriage).

Dr. Katherine Dalton reports that women who use a properly formulated progesterone cream during the first 19-20 weeks of pregnancy produce healthier, more intelligent children.

For more detailed, technical information of the functions of Natural Progesterone and its effect on pregnancy, see the Progesterone Technical Information Page


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