Menstruation is like a new block that has stumbled out of the closet in recent years, breaking away from the shackles of dogma and taboos that have grappled with it for centuries. Why do women have periods??? This question has been asked for ages but in hushed tones. It is only in recent years that youngsters are voicing their doubts, fears, and apprehensions, and it is becoming imperative to empower them with the right knowledge and wisdom.
To some, periods would appear to be a waste of energy, and that too on a monthly basis in the most productive years of life. However, as various studies conducted by scientists on tissue and molecular levels show, menses appear to have some evolutionary advantage over humans.
In scientific terms, menstruation can simply be seen as a by-product of spontaneous decidualisation (shedding of the thickening of the womb). It gives the womb the power to select the embryos with the best chance of implantation and growth. It is also proposed that the monthly regeneration cycle may allow the uterine endometrium to adapt and improve. In other mammals, this renewal would only occur at the end of their pregnancy.
A menstrual cycle represents the interval between successive menstrual periods. Every month, there is an intricate interaction between the pituitary glands in the brain, the ovaries, and the uterus (or womb). There is an HPO (hypothalamic-pituitary-ovarian) axis in place. Hormones are released through positive and negative feedback mechanisms to prepare the body for a possible pregnancy. An egg is released during ovulation, the endometrial lining of the uterus builds up, and changes also occur in the cervical mucus. If pregnancy doesn't occur, hormonal changes induce shedding of the built-up endometrial lining, which is the period. This then restarts the cycle.
Normal menstrual cycle lengths range between 21–35 days, including a menstrual phase (menses) of about three to seven days. The beginning of menstrual bleeding is defined as a new menstrual cycle (i.e. day one of the cycle). A healthy woman loses approximately 43 mL (30-60 mL) of blood over the days of her menstruation. Blood constitutes about one-third of this discharge; menstrual fluid volume and composition vary considerably among women, including cell debris from the endometrial endothelium and endometrial gland secretions. Cervical mucus and vaginal discharge are also present in much lesser proportion.
The average menstrual cycle lasts 28 days, but for some women, it is as short as 21 days, and for others, it is as long as 35 days. When periods begin( i.e., Menarche), it can also take a while before they develop a regular pattern. The cycle also changes as we get older.
The menstruation cycle (and period) takes a temporary pause during pregnancy. Breastfeeding also affects the cycle and can make it irregular. At the end of menopause, the menstrual cycle stops permanently.
Although menstruation is a natural process, some women experience premenstrual syndrome (PMS) with varied symptoms like acne, tender breasts, mood swings, headache and tiredness. Some women experience increased severity of these symptoms that affect their daily living, called premenstrual dysphoric disorder (PMDD), affecting 3-8% of women. Dysmenorrhea (menstrual cramps or period pain) is felt as painful cramps in the tummy during the first 2-3 days of menses that can spread to the back and upper thighs. Debilitating period pain should not be thought of as normal and can be a sign of some underlying condition like endometriosis. Such issues can significantly affect a woman's health and quality of life. One should not hesitate or lose time to seek advice from a gynaecologist as timely interventions can improve these women's lives.
A woman’s menstrual period is when her uterus sheds its lining along with the unfertilised egg. Every menstrual cycle, hormonal changes occur to thicken the uterine lining in preparation for pregnancy. When implantation does not occur, this lining is shed along with the unfertilised egg.
Every month, progesterone levels increase around ovulation and thicken the uterine lining, making it a receptive environment for a fertilised egg. If the uterus does not receive a fertilised egg, it will start shedding the uterine lining. This discarding of the tissues is known as the menstrual period and is necessary for the proper functioning of the reproductive system.
For most women, their menstrual period can stop by the time they are 55 years old. This can occur at any age between 45 and 55. When a woman does not get a period for 12 consecutive months, it means she has reached menopause.
Period is the body’s natural way to shed the uterine lining, which is not needed anymore, as pregnancy did not occur. Without her period, the uterine lining will continue to stay inside and cause various complications.
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