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Menstrual Cycle

When periods (menstruations) come regularly, this is called the menstrual cycle. Having regular period is a sign that important parts of women body are working normally. The menstrual cycle provides important body chemicals, called hormones, to keep you healthy. Menstrual cycle also prepares your body for pregnancy each month. A menstrual cycle is counted from the first day of 1 period to the first day of the next period. The average menstrual cycle is 28 days long. Menstrual cycles can range anywhere from 21 to 35 days in adults and from 21 to 45 days in young teens.


What is a menstrual cycle?


The menstrual cycle is the series of changes a woman's body goes through to prepare for a pregnancy. About once a month, the uterus grows a new lining (endometrium) to get ready for a fertilized egg . When there is no fertilized egg to start a pregnancy, the uterus sheds its lining. This is the monthly menstrual bleeding  (also called menstrual period) that women have from their early teen years until menopause, around age 50.

The menstrual cycle is from Day 1 of bleeding to Day 1 of the next time of bleeding. Although the average cycle is 28 days, it is perfectly normal to have a cycle that is as short as 21 days or as long as 35 days.

Girls usually start having menstrual periods between the ages of 11 and 14. Women usually start to have fewer periods between ages 39 and 51. Women in their 40s and teens may have mentrual cycles that are longer or change a lot. If you are a teen, your mentrual cycles should even out with time. If you are nearing menopause, your cycles will probably get longer and then will stop.

At different times in your life, your menstrual cycle may become irregular due to a variety of factors, including pregnancy, stress, diet, hormonal imbalance, exercise, and illness.

Regular menstruation is a positive indication that your body is in homeostasis, making appropriate levels of hormones according to an age-old rhythm proven optimal for reproduction. However, this hormone-dependent cycle can be mercurial — prone to imbalance and upset by the many stresses of modern life. It is relatively easy, then — and completely normal — to experience hormonal imbalances that disrupt your menstrual cycle.

The good news is that it’s relatively easy to re-establish and maintain a healthy, regular cycle when you give your body the right support. Positive lifestyle changes can make a remarkable difference in menstrual health, and our patients have had great success with improvements in diet, and adding a medical-grade nutritional supplement. In some cases, additional bioidentical progesterone support may be helpful. These measures will support your body’s natural hormonal balance.

Mentrual Cycle


Phase Of Menstrual Cycle



The menstrual cycle can be divided into several different of six phases. The average length of each phase is shown below, the first three are related to changes in the lining of the uterus whereas the final three are related to processes occurring in the ovary:

Name of phase

Average start day
assuming a 28-day cycle

Average end day

Menstrual Phase (menstruation)



Proliferative Phase (some sources include menstruation in this phase)



Ovulatory Phase (ovulation)



Luteal Phase (also known as secretory phase)



Ischemic Phase



Follicular Phase



Menstrual Cycle
Mentrual Cycle Of a Women



Day 1 -7 Of Menstrual Cycle:  Menstruation - Normally 3-7 days


Every menstrual cycle (the time from the first day of your menstrual period / menstrual cycle until the first day of your next menstrual period) is different. On average, a woman has her menstrual period / menstrual cycle for 3-7 days. The average length of a woman's cycle is 28-32 days. This leaves plenty of room for a woman to vary from her neighbor, friend, or co-worker. Women also vary in the severity of symptoms that occur before and during menstruation.

Approximately 85% of women who menstruate report changes in the days or weeks before their menstruation that cause problems that affect their normal lives. This is known as Premenstrual Syndrome .

During menstruation, the uterus, which is a muscle, contracts and relaxes more than it does at other times in the month. This can produce the uncomfortable feeling of cramps. Using a heating pad or hot water bottle may help ease some of the discomfort. Taking over-the-counter pain relievers such as naproxen, ibuprofen, or acetaminophen may also help. Other discomforts during menstruation may include breast tenderness, bloating, headaches, fatigue, mood swings, and food cravings. Some women will experience these symptoms more than others will, and not every woman will experience all of these symptoms.

Day 8 -11 Of Menstrual Cycle: The lining of womb thickens in preparation of the egg.


Hormones trigger your ovaries to produce and release one egg from either your right or your left ovary. This is called ovulation of mentrual cycle. Before ovulation occurs, your uterine lining is thickening to prepare for a fertilized egg to implant in the uterus. If an egg is not fertilized, then the uterine lining sheds. This is called menstruation or your menstrual period.

Day 12 -18 Of Menstrual Cycle : Ovulation


Ovulation occurs when a mature egg is released from the ovary, pushed down the fallopian tube and is available to be fertilized. The lining of the uterus has thickened to prepare for a fertilized egg.

Day 18-25 Of Menstrual Cycle : If fertilization has not taken place, the corpus luteum fades away.


Day 26 -28 Of Menstrual Cycle : The uterine lining detaches leading to menstruation.

Souce: Wikipedia - Menstrual Cycle


1. Menstrual Cycles: What Really Happens in those 28 Days?


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