Why is menstrual cycle more than a monthly period

The menstrual cycle is much more than a monthly period. It is a carefully timed biological rhythm, that reflects the health of the whole body. Controlled by signals between the brain and ovaries, the cycle prepares the body for a possible pregnancy while influencing energy, mood, metabolism and other body functions.

Four stages, many changes

Menstruation (Days 1–5) marks the beginning of the cycle. When the levels of the hormones oestrogen and progesterone fall, the womb lining is shed, causing menstrual bleeding. Some women experience cramps, tiredness and changes in their general sense of well-being.

During the follicular phase (Days 1–13), a hormone called FSH helps eggs inside the ovaries develop. The growing follicles produce increasing amounts of oestrogen. This hormone helps rebuild the womb lining and may be associated with improved mood, clearer skin and greater mental alertness.

Around Day 14, ovulation occurs. A sudden rise in another hormone, LH, causes a mature egg to leave the ovary. This is the most fertile period of the cycle. Body temperature usually rises by about 0.3°C to 0.6°C shortly after ovulation because of the effect of progesterone on the brain's temperature-control centre.

The luteal phase (Days 15–28) follows ovulation. The emptied follicle becomes the corpus luteum and produces progesterone, which maintains the womb lining. If pregnancy does not occur, hormone levels fall, triggering the next period and often causing symptoms such as bloating, tiredness, breast tenderness and anxiety.

Menstrual hygiene matters

Good menstrual hygiene helps protect health. Clean, good-quality pads, tampons or reusable menstrual cups can be used safely.

Pads should generally be changed every 4–6 hours, while menstrual cups should be emptied every 8–12 hours, according to the manufacturer's instructions.

The outer genital area can be washed with plain water. Strongly scented washes and harsh chemicals are best avoided because they may disturb the natural vaginal balance.

A window into wider health

Modern research suggests that menstruation may provide information about much more than fertility. Large studies examining thousands of biological measurements have found that the cycle can change nearly 200 proteins in the blood, potentially influencing immunity, blood vessels and metabolism.

Wearable devices are also being studied for changes in body temperature and other personal health signals that could eventually help identify changes in ageing and disease earlier.

When should women seek help?

Missing periods, known as amenorrhoea, or unusually severe menstrual pain should not simply be ignored.

They may sometimes be linked to conditions such as endometriosis, fibroids or polycystic ovary syndrome (PCOS).

Treatment depends on the problem. Anti-inflammatory painkillers can reduce severe cramps. Keeping a menstrual calendar can help doctors assess heavy or irregular bleeding.

Hormonal tablets, progesterone treatments or a hormone-releasing intrauterine device (IUD) may reduce heavy bleeding and make periods more predictable.

Severe premenstrual symptoms may improve with antidepressant medicines called SSRIs, talking therapies such as cognitive behavioural therapy, or medicines that temporarily suppress ovulation. When conditions such as fibroids or endometriosis are responsible, minimally invasive surgery may sometimes provide relief.

Understanding the menstrual cycle, therefore, is not simply about tracking periods. It is an important way of understanding the body's monthly rhythm—and recognising when a change may deserve medical attention.

-Dr. Roshini Ambat is a Consultant-Department of Obstetrics & Gynecology at KIMSHEALTH, Thiruvananthapuram