Top News

Heavy bleeding during periods lasting more than five days has often been associated with fibroids or hormonal issues. But a sudden drop in period flow and duration could also be a red flag for shifting hormones, daily stress load, or other health issues. Dr Hrishikesh Pai, consultant gynaecologist and IVF specialist at Lilavati Hospital, Mumbai tells Steffy Thevar how a healthy menstrual cycle is not just about timing, but also about the flow.

What is the ideal period flow? When does a lighter flow become a cause for concern?

A normal period typically occurs every 21-35 days, lasts for 2-7 days, and involves moderate flow. However, what is normal varies with age and individual period patterns. Teenagers may initially have lighter or irregular cycles, while women approaching menopause often notice changes. Not all light periods require treatment. However, if someone who previously had normal flow suddenly starts experiencing very scanty periods, it deserves medical attention. In clinical practice, persistent low flow can sometimes reflect reduced estrogen levels, a thin endometrial lining, or intrauterine causes. Timely intervention helps maintain hormonal balance, reproductive health, and future fertility.

What medical conditions can lead to sudden shorter, lighter periods?

Polycystic Ovary Syndrome (PCOS), thyroid disorders, premature ovarian insufficiency, and chronic systemic illness can play a part. In India, an important but often overlooked reason is genital tuberculosis, which can affect the uterine lining and lead to scanty or absent periods, especially in women with fertility concerns. Another cause is infections or adhesions (scar tissue) after dilatation and curettage (surgical procedure to remove uterine tissue), Caesarean delivery, or medical termination of pregnancy, which can affect the endometrial lining. Early evaluation helps identify such causes and guide treatment.

What role do hormonal changes play?

Hormones are the main regulators of menstrual flow. Any imbalance in estrogen or progesterone can reduce thickness of the uterine lining, leading to lighter periods. Stress, weight changes, and the transition toward menopause can all contribute. It becomes concerning when lighter periods are accompanied by hair thinning, acne, unexplained weight gain, hot flashes, or missed cycles. In some cases, irregular or very light periods may indicate ovulatory dysfunction and should be evaluated early.

Do contraceptives affect bleeding patterns?

Hormonal contraceptives, whether it’s pills, patches, vaginal rings, or hormonal IUDs, often make periods lighter because they intentionally make the uterine lining thinner. With hormonal IUDs, very light or even absent bleeding is common and medically safe. However, persistent heavy bleeding, bleeding after intercourse, severe pelvic pain, or foul discharge should not be ignored. Even while using contraception, such symptoms require medical review to rule out underlying issues.

How do stress, weight changes, and intense exercise disrupt period flow and duration?

The menstrual cycle is highly sensitive to physical and emotional stress. Rapid weight loss, excessive exercise, eating disorders, or chronic stress can suppress ovulation and lower estrogen levels, leading to very light or absent periods. While this may seem harmless, prolonged estrogen deficiency can affect bone health and overall hormonal balance. Early correction through lifestyle changes and medical guidance helps prevent long-term reproductive and metabolic consequences.

What tests are recommended?

A basic evaluation usually includes hormonal blood tests (thyroid function, prolactin, ovarian hormones), pelvic ultrasound, and assessment of ovulation. Identifying the cause early is important for overall health and, where relevant, for future fertility planning.

What are the treatment possibilities?

Treatment depends on the underlying cause. Lifestyle modifications can restore normal cycles in stress-related cases. Thyroid disorders or PCOS may require medication. If the uterine lining is thin, hormonal therapy may help improve endometrial development. In cases of intrauterine adhesions or genital tuberculosis, specific medical or procedural treatment may be needed.

What about those trying to get pregnant?

In women facing infertility issues along with hormonal disturbances, endoscopic procedures such as a hysteroscopy or laparoscopy may be advised to identify and treat the underlying cause. Once corrected, pregnancy may be attempted through natural timed intercourse, ovulation induction with intrauterine insemination (IUI), or in-vitro fertilisation (IVF), depending on the clinical situation.