Female Hormone
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Female Hormone
Share on Pinterest Female sex hormones affect bone and muscle growth.
Share on Pinterest During puberty, the body produces more estrogen and progesterone.
Share on Pinterest Menopause can cause sleeping difficulties.
Medically reviewed by Deborah Weatherspoon, Ph.D., R.N., CRNA — Written by Jamie Eske on April 5, 2019
Medically reviewed by Stacy Sampson, D.O.
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Female sex hormones, or sex steroids, play vital roles in sexual development, reproduction, and general health. Sex hormone levels change over time, but some of the most significant changes happen during puberty, pregnancy, and menopause.
In this article, we discuss the different types of female sex hormones, their roles in the body, and how they affect arousal.
Hormones are chemical messengers that the endocrine glands produce and release into the bloodstream. Hormones help regulate many bodily processes, such as appetite, sleep, and growth.
Sex hormones are those that play an essential role in sexual development and reproduction. The main glands that produce sex hormones are the adrenal glands and the gonads, which include the ovaries in females and testes in males.
Sex hormones are also important for a range of bodily functions and a person’s general health. In both males and females, sex hormones are involved in:
Sex hormone levels fluctuate throughout a person’s life. Factors that can affect the levels of female sex hormones include:
Sex hormone imbalances can lead to changes in sexual desire and health problems such as hair loss , bone loss, and infertility .
In females, the ovaries and adrenal glands are the main producers of sex hormones. Female sex hormones include estrogen , progesterone , and small quantities of testosterone .
We discuss each of these sex hormones below:
Estrogen is probably the most well-known sex hormone.
Although the majority of estrogen production occurs in the ovaries, the adrenal glands and fat cells produce small amounts of estrogen, too. Estrogen plays a crucial role in reproductive and sexual development, which begins when a person reaches puberty.
The ovaries, adrenal glands, and placenta produce the hormone progesterone . Progesterone levels increase during ovulation and spike during pregnancy.
Progesterone helps stabilize menstrual cycles and prepares the body for pregnancy. Having a low level of progesterone can lead to irregular periods , difficulty conceiving, and a higher risk of complications during pregnancy.
Although testosterone is the main sex hormone in males, it is also present in lower amounts in females.
Females typically enter puberty between the ages of 8 and 13 years , and puberty usually ends when they are around 14 years old .
During puberty, the pituitary gland starts producing larger quantities of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which stimulates the production of estrogen and progesterone.
Increased levels of estrogen and progesterone initiate the development of secondary sexual characteristics, which include:
Menarche is the first time a person gets their menstrual period , and it typically occurs between the ages of 12 and 13 years . However, menarche can occur at any time between 8 and 15 years of age.
After menarche, many people have regular menstrual cycles until they reach menopause. Menstrual cycles are usually around 28 days long but can vary between 24 and 38 days .
The menstrual cycle occurs in three phases that coincide with hormonal changes:
The first day of a period marks the beginning of a new menstrual cycle. During a period, blood and tissue from the uterus exit the body through the vagina. Estrogen and progesterone levels are very low at this point, and this can cause irritability and mood changes.
The pituitary gland also releases FSH and LH, which increase estrogen levels and signal follicle growth in the ovaries. Each follicle contains one egg. After a few days, one dominant follicle will emerge in each ovary. The ovaries will absorb the remaining follicles.
As the dominant follicle continues growing, it will produce more estrogen. This increase in estrogen stimulates the release of endorphins that raise energy levels and improve mood.
Estrogen also enriches the endometrium, which is the lining of the uterus, in preparation for a potential pregnancy.
During the ovulatory phase, estrogen and LH levels in the body peak, causing a follicle to burst and release its egg from the ovary.
An egg can survive for around 12–24 hours after leaving the ovary. Fertilization of the egg can only occur during this time frame.
During the luteal phase, the egg travels from the ovary to the uterus via the fallopian tube. The ruptured follicle releases progesterone, which thickens the uterine lining, preparing it to receive a fertilized egg. Once the egg reaches the end of the fallopian tube, it attaches to the uterine wall.
An unfertilized egg will cause estrogen and progesterone levels to decline. This marks the beginning of the premenstrual week.
Finally, the unfertilized egg and the uterine lining will leave the body, marking the end of the current menstrual cycle and the beginning of the next.
Pregnancy starts the moment a fertilized egg implants in the wall of a person’s uterus. Following implantation, the placenta begins to develop and starts producing a number of hormones, including progesterone, relaxin, and human chorionic gonadotropin (hCG).
Progesterone levels steadily rise during the first few weeks of pregnancy, causing the cervix to thicken and form the mucus plug.
The production of relaxin prevents contractions in the uterus until the end of pregnancy, at which point it then helps relax the ligaments and tendons in the pelvis.
Rising hCG levels in the body then stimulate further production of estrogen and progesterone. This rapid increase in hormones leads to early pregnancy symptoms, such as nausea, vomiting, and the need to urinate more often.
Estrogen and progesterone levels continue to rise during the second trimester of pregnancy. At this time, cells in the placenta will start producing a hormone called human placental lactogen (HPL). HPL regulates women’s metabolism and helps nourish the growing fetus.
Hormone levels decline when a pregnancy ends and gradually return to prepregnancy levels. When a person breastfeeds, it can lower estrogen levels in the body, which may prevent ovulation occurring.
Menopause occurs when a person stops having menstrual periods and is no longer able to become pregnant. In the United States, the average age at which a woman experiences menopause is 52 years .
Perimenopause refers to the transitional period leading up a person’s final period. During this transition, large fluctuations in hormone levels can cause a person to experience a range of symptoms.
Symptoms of perimenopause can include:
According to the Office on Women’s Health , perimenopause usually lasts for about 4 years but can last anywhere between 2 and 8 years.
A person reaches menopause when they have gone a full year without having a period. After menopause, the ovaries will only produce very small but constant amounts of estrogen and progesterone.
Lower levels of estrogen may reduce a person’s sex drive and cause bone density loss, which can lead to osteoporosis . These hormonal changes may also increase the risk of heart disease and stroke .
Estrogen, progesterone, and testosterone all affect sexual desire and arousal. Having higher levels of estrogen in the body promotes vaginal lubrication and increases sexual desire. Increases in progesterone can reduce sexual desire.
There is some debate around how testosterone levels affect female sex drive.
Low levels of testosterone may lead to reduced sexual desire in some women. However, testosterone therapy appears ineffective at treating low sex drive in females.
According to a systematic review from 2016 , testosterone therapy can enhance the effects of estrogen, but only if a doctor administers the testosterone at higher-than-normal levels. This can lead to unwanted side effects.
Hormonal balance is important for general health. Although hormonal levels fluctuate regularly, long-term imbalances can lead to number of symptoms and conditions.
Signs and symptoms of hormone imbalances can include:
Hormonal imbalances can be a sign of an underlying health condition. They can also be a side effect of certain medications. For this reason, people who experience severe or recurring symptoms of hormonal imbalances should speak to a doctor.
In females, potential causes of hormonal imbalances include:
Hormones are chemical messengers that help regulate bodily functions and maintain general health. Sex hormones play a crucial role in sexual development and reproduction.
In females, the main sex hormones are estrogen and progesterone. The production of these hormones mainly occurs in the ovaries, adrenal glands, and, during pregnancy, the placenta.
Female sex hormones also influence body weight, hair growth, and bone and muscle growth. Although these hormones naturally fluctuate throughout a person’s lifetime, long-term imbalances can cause a range of symptoms and health effects.
Last medically reviewed on April 5, 2019
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With the complexity of a female’s hormonal system, why does conventional medicine take such an overly simplistic view of it? Check out this article for a deeper understanding of female hormonal physiology.
“The man is the head, but the woman is the neck. And she can turn the head any way she wants.”
— Big Fat Greek Wedding
Women, you are beautiful, graceful and complex creatures. I have the utmost respect for you. It is my honest opinion that without you, the world would have fallen apart a long, long time ago.
As women, you have a multitude of depths to you emotionally, mentally and not surprisingly, hormonally. And therein lies the problem.
With the complexity of a female’s hormonal system, why does conventional medicine take such an overly simplistic view of it? When a woman goes to the doctor complaining about hormonal symptoms, I’m sorry, but it’s not as easy as putting her on hormones (birth control, hormone replacement therapy, etc.). There is much more to it, which hopefully you will learn from this little article.
When talking about female hormones, there is no simple 101 course. Hopefully this video will offer an initial explanation of how your hormones work. It is my opinion that every woman needs to have a broad understanding of how their hormonal cycle works before visiting a doctor for testing.
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Now that you have a general understanding of your hormonal system, here are a few of the many, many things that can go wrong. Incidentally, very few of these require hormone therapy. In fact, almost none of them do.
Hormone replacement therapy is one of the most over-prescribed, abused and damaging drugs a woman can be prescribed. Yes, it has helped some women and yes, some women legitimately need it. But just because something makes you feel good doesn’t mean it’s good for you.
Hormones are critical to the function of virtually every system in the body; specifically:
Most importantly, the beneficial effects of hormones occur when they are in balance. In excess or in deficiency, all hormones can have negative consequences.
If I didn’t have any scruples I would simply say, “Everyone needs chaste tree berry or black cohosh,” or “Every woman needs progesterone cream.” But that would be wrong. Very wrong. In fact that would be downright ignorant.
Instead, if you have hormonal symptoms, you need to get tested. When it comes to testing, you have a few different options – blood, saliva and urine.
All tests are valid, but have a different place clinically.
When it comes to female hormone testing, I believe the only option is salivary testing. Reason being, you can inexpensively take multiple samples throughout the month and evaluate the entire month of hormones, rather than simply taking a single blood draw and making assumptions about what hormones are doing the other 27 days of the month. The lab I particularly like is Diagnostechs simply because they also include pituitary hormones in their samples.
When a woman comes into our office with hormonal issues, we rarely run a hormone test . . . initially. Reason being, there are four things that will completely wreck a woman’s hormones, a few of which have already been discussed.
Blood sugar must be balanced. This has been discussed in a previous article , but in women, blood sugar imbalances cause increases in testosterone, which will wreak havoc on the hormonal system.
The adrenal glands must be healthy. As you saw in the video, adrenal dysfunction can suppress pituitary function and rob the sex hormones of the necessary precursors for hormone production. Dysfunctional adrenal glands are paramount in hormonal balance.
Gastrointestinal function must be working properly. This is an often missed component of hormone balance. Gastrointestinal dysfunction can raise cortisol, cause hormone detoxification issues, and produce damaging hormone metabolites, to name a few. If your guts aren’t working properly, neither will your hormones.
Each of these systems must be working properly if hormone balance is desired. Put another way, you will not have optimal hormone balance if any of these systems are not working properly.
Female hormones are as complex as . . . well . . . female hormones. There is nothing quite like them. But women are easily the most mistreated patients in medicine today. If you have hormonal symptoms, fixing them is not as simple as giving you more hormones. Your body needs to be functioning correctly and when it does, hormones have a magical way of properly regulating themselves.
Dr Walsh’s new program is designed for those folks doing everything right – but are experiencing sub-optimal health and body composition. All because of some underlying physiological problem. Fat Is Not Your Fault provides everything you need to test for – and correct – the most common – but undertreated hormonal and foundational health problems. So if you think you might be experiencing “abnormal physiology” – and would like to get to the bottom of it – Fat Is Not Your Fault is definitely for you.
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