Ranges of Normal Estrogen Levels

women low estrogen


What are Normal Estrogen Levels?  Plus How they vary during the Aging Process

  • Ranges of normal estrogen levels are measured in parts pg/ml of estradiol.

  • Estrogen is the dominant female hormone and fluctuates during different times in the menstrual cycle and as you age.

  • In normal reproductive age women, during the menstrual cycle, estradiol levels range from 50-400 pg/ml. The actual estrogen levels vary during different parts of the menstrual cycle as shown in the graph to the right.

Estrogen & the Regular Menstrual Cycle.

ovulation hormone graphEstrogen levels peak just prior to ovulation, and then drop off drastically. It is this sharp drop of the main estrogen estradiol that helps trigger the ovulation process.

After ovulation Progesterone levels start to rise in anticipation of fertilization. Estrogen also rises again during this phase, but progesterone levels should now be almost twice as high as estrogen levels. If pregnancy does not occur within 10 to 12 days after ovulation, estrogen and progesterone levels fall abruptly, triggering menstruation, and the cycle begins anew.

Normal Estrogen Levels Decline During Menopause & Perimenopause

 Estrogen levels under 100 pg/ml can be associated with hot flashes, and can signal aspects of perimenopause. During perimenopause there are no normal estrogen levels as it starts to decline in an irregular fashion; and in some women there can actually be more estrogen produced than in the past.

In menopause, estrogen plummets and skyrockets in a rollercoaster fashion and after about a year eventually levels off at a lower more stable level signaling the start of postmenopause. .

Estrogen Dominance Syndrome

After menopause, progesterone decreases by over 99% from its original youthful baseline levels; while normal estrogen production only decreases by about 40%.

Progesterone to Estrogen Levels - Estrogen Dominance Syndrome Graph

This drastic drop in progesterone leads to an imbalance between estrogen and progesterone causing an increase in estrogen activity. Dr. Lee has named this syndrome "estrogen dominance", According to Dr. John Lee, "there are very few Western women truly deficient in estrogen; most become deficient in progesterone."

When your progesterone gets low, then a host of uncomfortable things can happen in your body.

Understanding the different types of estrogen

Estrogen is a group of hormones that are created in the ovaries and the pituitary gland. All estrogen hormones (estrone, estradiol and estriol) occupy the same estrogen receptor sites. Estradiol is the most potent and is converted to the weaker estrone, and then to estriol when levels of progesterone rise. This family of types of estrogen works in concert with progesterone to nourish and support the growth and regeneration of the female reproductive tissues, breasts and distribution of body fat.

Low Estrogen Levels and How to Naturally Balance them with Bioidentical Hormones

Estrogen levels are considered low when the range is 10 to 20 pg/ml.

In healthy women, the onset of menopause is the main reasons that estrogen levels plummet causing an estrogen deficiency in the body. Menopause is definitely a roller coaster ride of estrogen swings, and the host of potential side effects are compounded as progesterone levels bottom out contributing to estrogen dominance syndrome. Fortunately both these situations can be helped by taking natural bioidentical hormones.

Low estrogen can also occur in younger women, and this can be caused by excessive exercise or anorexia, radiation and certain chemicals. It can also genetic causes such as Turner Syndrome.

The Anti Aging Guide specializes in natura bioidentical hormone replacement therapy  and we  have researched what we believe to be the best products for boosting and balancing both estrogen and progesterone levels.

Be Sure to get your hormones tested with one of our home hormone test kits.

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