Fertility problems could be caused by irregularities in women’s menstrual cycles. A short luteal phase is one such issue that could lead to trouble with successfully conceiving a baby and becoming pregnant. In this article, we take a look at several aspects of this condition, including its causes, symptoms, diagnosis and potential treatments.
Let's review the women's menstrual cycle to better understand the importance of the luteal phase. There are four phases to a typical menstrual cycle.
1. Menstrual Phase: This is the time during which menstrual bleeding takes place, and it is considered to be the starting point of the cycle.
2. Follicular Phase: During this phase, egg-carrying follicles within the ovaries begin to develop thanks to the release of follicle-stimulating hormone (FSH) from the pituitary gland.
3. Ovulation Phase: This is the time when a dominant follicle releases a fully mature egg so that it can travel to the fallopian tube and await fertilisation by sperm.
4. Luteal Phase: This phase begins when the egg begins its journey and ends when periods begin, thus marking the start of the next menstrual cycle.
During the luteal phase, the uterus begins preparing for a potential pregnancy. The corpus luteum, a tissue that produces progesterone, develops from the dominant follicle that delivered the egg. The increase in progesterone is vital for conception because:
● It causes the lining of the uterus to thicken, facilitating the implantation of the fertilised egg.
● It encourages the cervical mucus to become thicker, almost paste-like, to prevent the entry of bacteria and other germs into the uterus, thereby ensuring the safety of the developing embryo.
If the egg is not fertilised, the corpus luteum will dissolve, and progesterone levels will decline. This inevitably leads to the start of the next menstrual cycle.
A typical luteal phase lasts from 11 to 17 days. The following are a few of the most common signs that the menstrual cycle has entered the luteal phase:
1. Increase in Basal Body Temperature
During the luteal phase, a slight increase in body temperature may be noticed.
2. Change in the Consistency of the Vaginal Discharge
The vaginal discharge or cervical mucus usually becomes thick, dry and paste-like during the luteal phase.
3. Occurrence of PMS-like Symptoms
During the luteal phase, women may experience issues that resemble those that occur during PMS. This may include breast soreness, mood swings, changes in appetite and bloating.
The luteal phase is a significant part of the menstrual cycle. The uterine environment's ability to support the developing embryo is a major factor in a successful pregnancy.
While a normal luteal cycle lasts 10 to 17 days, a short luteal phase is one that lasts less than 8 days. This could lead to fertility problems, since there isn’t enough time to secrete the required levels of progesterone. If progesterone levels are too low, then the uterine lining will be too weak to support the implantation of the fertilised egg. In case implantation does occur, the uterine lining may be unable to support the growing fetus, thus resulting in a miscarriage.
The following are believed to be some of the reasons for a short luteal phase.
The corpus luteum may not have developed properly, thus hindering its ability to produce adequate levels of progesterone. This issue could be caused by a number of reasons, such as obesity, PCOS, thyroid diseases, etc.
A stressful life, indulgence in bad habits like alcohol and tobacco usage, an unhealthy diet, a sedentary lifestyle, improper weight management and fitness regimens, etc., could affect the duration of the luteal phase.
Conditions like endometriosis, polycystic ovary syndrome (PCOS), underactive or overactive thyroid glands, etc., have been known to disrupt the menstrual cycle. Therefore, such issues could lead to a short luteal phase.
As women get older and approach menopause, their menstrual cycles become irregular. The short luteal phase may be a result of this.
Most women usually become aware of this issue when fertility problems occur. Here are some of the most common symptoms of a short luteal phase:
Women with a short luteal phase may experience frequent menstrual periods because their cycles are abnormally short. Women who track their ovulation may notice that there are fewer than 10 days from ovulation to getting their period.
There may be trouble with conception, despite actively trying to get pregnant. This is usually the first indicator that there are fertility issues that need to be diagnosed. Since progesterone deficiency prevented thickening of the uterine lining, the fertilised egg would be unable to implant itself in it.
Despite having a positive pregnancy test, there may be a miscarriage right during the early days of the pregnancy. This shows that the uterine lining was unable to withstand the weight of the growing fetus.
In some cases, women with a short luteal phase may notice light bleeding or spotting in between their menstrual cycles.
When a short luteal phase is suspected to be behind fertility issues, the doctor may recommend a few tests to confirm the diagnosis. These include:
Blood tests to check hormone levels may be performed. The levels of FSH, LH (luteinizing hormone), estrogen and progesterone will be checked.
Ultrasound imaging may be used to check the thickness of the uterine lining.
A small piece of the lining of the uterus will be taken for analysis around a day or two before the menstrual cycle starts. This will help determine if there are any structural abnormalities or hormonal variations.
A short luteal phase can be treated. Doctors usually recommend the following:
● Progesterone Supplements: This medication should be taken after ovulation.
● Clomiphene Citrate, also known as Clomid: This medication helps stimulate the production of follicle-stimulating hormone and estrogen, which eventually triggers a surge of luteinizing hormone.
● Human Chorionic Gonadotropin (hCG): This medication stimulates the body to produce hormones like progesterone and estrogen.
Doctors may recommend adopting a healthier diet, engaging in appropriate fitness routines, and implementing stress relief measures (yoga, meditation, etc.) to help bring progesterone levels back to normal.
The luteal phase may begin to normalise once the medications and lifestyle measures take effect and any underlying health issues have been resolved. Once this happens, it is quite possible to become pregnant.
It’s quite easy to overlook the luteal phase of the menstrual cycle while exploring the reasons behind fertility issues. Proper awareness is required so that more women can proactively identify and seek treatment to resolve this condition at the earliest.
Adopting a healthy lifestyle and reducing stress are key to lengthening the luteal phase.
A short luteal phase impairs the production of progesterone, thus leading to fertility issues.
Increased stress levels are believed to cause a short luteal phase and, consequently, lead to fertility issues.
It is possible for the short luteal phase to be resolved by adopting lifestyle changes.
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