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Progesterone -  The Almost Forgotten Hormone
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Home > Articles > Progesterone – The Almost Forgotten Hormone

Progesterone – Past and Present

Historically, estrogen and how it affects us has been the most commonly talked about sex hormone.  However, the importance of progesterone, which is another type of sex hormone, has rarely been mentioned in the past.

Scientific research is beginning to shed light on the importance of maintaining a balance between progesterone and estrogen for overall health and well being.  It is also beginning to show the significant differences between natural and synthetic progesterone.                                        

The primary hormones that are prescribed for hormone replacement therapy (HRT) or birth control pills are derived from synthetic sources and do not have the same function in the body that our own biological hormones do.

Studies have shown that synthetic hormones are linked to an increase in certain types of cancer, strokes, and heart disease.  According to the Women’s Health Initiative study, an experiment involving hormone replacement therapy was stopped early due to the increase in breast cancer.  Breast cancer rates have dropped significantly since reports of this study were released in 2002. http://jama.ama-assn.org/cgi/content/full/288/3/321  http://jech.bmj.com/cgi/content/abstract/59/9/740

Presently, natural progesterone (bio-identical hormone therapy) is beginning to get recognition for its beneficial effects.  According to Dr. John R. Lee, an authority on hormone balancing, “natural progesterone has a molecular structure identical to the progesterone produced by the human body and is created through the fermentation process of the Mexican wild yam.”  


Importance of Progesterone

Progesterone can help prevent estrogen from becoming harmful to our health among other protective factors.  Therefore, supplementing with a natural progesterone cream, such as Progesta-Care, can help correct hormonal imbalances that cause symptoms associated with estrogen dominance.  
http://www.totalityofbeing.com/FramelessPages/Articles/EstrogenArt.htm
http://www.energeticnutrition.com/articles/estrogen-dominance.html 

Progesterone is also the primary hormone of fertility and pregnancy. It is essential to the survival of the fertilized egg, then the embryo, then the fetus.  In pregnancy, it prevents the shedding of the uterine lining, as a drop in progesterone can result in a miscarriage.  http://www.totalityofbeing.com/FramelessPages/Articles/IncFertility.htm

Natural progesterone helps to counter balance the negative effects of estrogen.  When there is not enough progesterone to counterbalance estrogen, one may begin to have symptoms of estrogen dominance.  For example, PMS, heavy or irregular periods, irritability, weight gain, anxiety, hair loss, low libido, fibrocystic breasts, endometriosis, and uterine fibroids, to name a few.  

Symptoms of Progesterone Deficiency

  • Hot Flashes
  • Breast Tenderness
  • Fibrocystic Breasts
  • Anxiety
  • Hair Loss
  • Bone Loss
  • Low Libido
  • Night Sweats
  • Irregular Periods
  • Vaginal Dryness
  • Depression
  • Insomnia
  • Infertility
  • Weight Gain
  • Acne
  • Bloating
  • Mood Swings
  • Memory Lapses
  • Loss of Muscle
  • Nervousness
  • Excess Facial/Body Hair
  • Heavy or Painful Periods
  • Urinary Incontinence
  • Poor Concentration
  • Irritability

Furthermore, progesterone is a building block for many other hormones, including the corticosteroids, which are produced by the adrenal glands and are essential for stress response, electrolyte balance, blood pressure, and lastly, survival.  Without adequate progesterone, synthesis of the cortisones is impaired and the body turns to alternate pathways. These alternate pathways have masculine-producing side effects, such as long facial hairs and thinning of scalp hair.  Cortisol, DHEA, testosterone, and estrogen are all made from progesterone in a process that begins with cholesterol. 


Importance of Balancing Progesterone and Estrogen

Hormones have a profound effect on your everyday health and well-being; although only present in tiny amounts, they have an affect on every cell.  Not only do hormones have individual affects, but they also interact with each other to produce dramatic effects in the body.  Because of these interactions, they are able to trigger multiple body systems. 

The balance of progesterone and estrogen in a woman’s body is very important.  At different times in the life of a woman, hormonal imbalance can be caused by stress, obesity, poor liver function, birth control pills, plant estrogens (soy, flaxseeds, red clover), hormone replacement therapy, peri-menopause, glandular dysfunction, and environmental estrogens.   

Regardless of the cause, the end result of an imbalance between estrogen in relation to progesterone adds up to a condition Dr. John Lee has termed “estrogen dominance”, as mentioned above.  This condition can result in symptoms of PMS, perimenopause, or menopause.  Dr. Lee’s books, What Your Doctor May NOT Tell You About Premenopause and What Your Doctor May NOT Tell You About Menopause explains this and more, in-depth.  These books are available on our website.

Causes of Imbalance Between Progesterone and Estrogen

  • Stress
  • Obesity
  • Poor Liver Function
  • Birth Control Pills
  • Plant Estrogens (soy, flaxseeds, red clover)
  • Hormone Replacement Therapy
  • Peri-menopause
  • Glandular Dysfunction
  • environmental estrogens

Natural (bio-identical) Progesterone Cream

Natural progesterone cream also helps supplement low progesterone levels assisting in proper hormone balance between estrogen and progesterone.  It can be safely used by menstruating women, premenopausal to peri-menopausal women, and those who are menopausal.

Natural progesterone cream can also be used to help maintain a normal level of progesterone, while protecting against the undesirable side effects of excess estrogen.  Since natural progesterone has been shown to be biologically identical to the same hormone women produce it offers an alternative to taking synthetic hormones. 

To date, there has been no toxic level associated with the use of natural progesterone.  In fact, natural progesterone has been shown to help protect against breast cancer, uterine cancer and fibrocystic breast disease.  It can help maintain the uterine lining, hydrate and oxygenate the skin, reverse facial hair growth and hair thinning, increase libido and sense of well being. It acts as a natural diuretic and can help eliminate depression, encourage fat burning and the use of stored energy, normalize blood clotting, and is a precursor to other important stress and sex hormones.

Additionally, men too can suffer from estrogen dominance and low progesterone levels. Estrogens from plant (phytoestrogens) and environmental (xenoestrogens) sources can produce hormonal stimuli that may contribute to this condition which can cause symptoms, such as prostate problems, impotency, lowered libido, atherosclerosis, and male patterned baldness.  Therefore, men can benefit from using a natural progesterone cream specially formulated for them. 
http://www.energeticnutrition.com/articles/estrogen-dominance.html

Benefits of Natural Progesterone Include:

  • Have a calming effect
  • Enhance moods
  • Regulate fluid balance
  • Normalize sleep
  • Increase sex drive
  • Help use fat for energy
  • Stabilize blood sugar, thyroid function, and mineral balance
  • Decrease risk of endometrial cancer
  • Help protect against breast cancer, fibrocystic breasts, and osteoporosis
  • Natural diuretic
  • Natural antidepressant
  • Normalizes zinc and copper levels
  • Facilitates thyroid hormone action
  • Normalizes blood sugar levels
  • Normalizes blood clotting
  • Restores proper oxygen cell levels
  • Normalizes menstrual cycles

Natural Progesterone vs. Synthetic

We feel it is important to explain the difference between natural bio-identical progesterone and synthetic progesterone commonly known as Progestin, Provera, Primulut, and Duphaston.  The popular Premarin is a synthetic estrogen that is commonly used as another form of hormone replacement therapy.  This pharmaceutical is made of synthetic estrogen without any synthetic progesterone added.   Even though there is a big difference between the effects of natural and synthetic progesterone, doctors often interchange their names.

In the beginning of this article, you learned about the benefits of natural bio-identical progesterone and how it can help with hormonal imbalance without harmful side effects associated with synthetic progesterone.

Natural progesterone is not a patentable product; therefore, the pharmaceutical companies have altered this hormone to produce synthetic progestins, which are patentable and are generally used in contraceptives and hormone replacement therapy (HRT).

“The synthetic version of this hormone is not really progesterone; it is a progestin. Progestins are synthetic progesterone-like compounds manufactured by pharmaceutical companies. Synthetic progesterones are far more powerful than the body’s own natural progesterone and are metabolized as foreign substances into toxic metabolites. These synthetic progesterones can gravely interfere with the body’s own natural progesterone, create other hormone-related health problems, and further exacerbate estrogen dominance.”  Source:  http://www.vrp.com/art/602.asp

Synthetic progestins are not exact replicas of the body's natural progesterone.  It is derived from pregnant mares’ urine.  Unfortunately, there is a long list of side effects, some of which are quite severe. A partial list includes headaches, depression, fluid retention, increased risk of birth defects and early abortion, liver dysfunction, breast tenderness, breakthrough bleeding, acne, hirsutism (hair growth), insomnia, edema, weight changes, pulmonary embolism, and premenstrual-like syndrome.

 “The following adverse reactions have been observed in women taking synthetic progestins,including PROVERA Tablets: breakthrough bleeding, spotting, change in menstrual flow, amenorrhea, edema, change in weight (increase or decrease), changes in cervical erosion and cervical secretions, cholestatic jaundice, anaphylactoid reactions and anaphylaxis, rash (allergic) with and without pruritus, mental depression, pyrexia, insomnia, nausea, somnolence.”      

The following adverse reactions have been observed in patients receiving synthetic estrogen-progestin combination drugs: rise in blood pressure in susceptible individuals, fatigue, backache, hirsutism, premenstrual-like syndrome, loss of scalp hair, erythema multiforme, changes in libido, erythema nodosum, changes in appetite, hemorrhagic eruption, cystitis-like syndrome, headache, itching, nervousness, dizziness.”   http://www.drugs.com/pro/provera.html       http://www.whi.org/findings/ht/eplusp_qol.php

Most importantly, synthetic progestins lack the intrinsic physiological benefits of progesterone, thus they cannot function in the major biosynthetic pathways as progesterone does and they can disrupt many fundamental processes in the body.

Progesterone is an essential hormone that also plays a part in the development of healthy nerve cells and brain and thyroid function. Synthetic progestins tend to block the body's ability to produce and utilize natural progesterone to maintain these life promoting functions. Source:  http://www.digitalnaturopath.com/cond/C8769.html

Side effects of Synthetic Progesterone

  • Headaches
  • Early abortion
  • Acne
  • Weight Changes
  • Depression
  • Liver dysfunction
  • Unwanted hair growth
  • Pulmonary embolism
  • Birth defects
  • Breakthrough bleeding
  • Cancer
  • Edema
  • Fluid Retention
  • Breast tenderness
  • Insomnia
  • PMD

Further Reading:

by Marie Holt, BSc
Nutritionist
Energetic Nutrition, Inc.

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