A recent study published in Nature Communications on September 16, 2025, reveals a potential link between long COVID and menstrual health in women.
Researchers report that the condition may cause heavier periods, longer cycles, and bleeding between periods, providing fresh insights into the lasting effects of COVID-19.
The study indicates that women suffering from long COVID are twice as likely to experience periods lasting more than eight days compared to women who have never had COVID.
Many also report hefty bleeding or irregular cycles, suggesting that post-COVID hormonal disruptions may affect uterine function.
Researchers explain that long COVID can persist in the body for months or even years, subtly altering bodily functions.
In affected women, the uterus exhibits reduced responsiveness to hormones, particularly showing lower progesterone receptor activity.
Elevated androgen levels and inflammation in the endometrial lining may contribute to these changes; however, ovarian function and fertility appear to be largely unaffected.
Implications for Women
The findings extend the understanding of long COVID beyond common symptoms such as fatigue, breathlessness, and sleep disturbances.
They highlight that post-COVID health effects may include menstrual irregularities, which can serve as a visible sign of hormonal imbalance and uterine inflammation.
Experts advise women who notice periods lasting over eight days or significant changes in bleeding patterns to consult a healthcare professional.
Proper evaluation can help rule out other underlying conditions and guide treatment to restore a normal menstrual cycle.
By linking prolonged periods and abnormal uterine bleeding to long COVID, the study underscores the importance of monitoring post-COVID health in women and recognising a broader spectrum of symptoms that may persist long after the initial infection.
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