Does the Moon Affect Menstrual Cycle?

does the moon affect menstrau cycle

The relationship between the menstrual cycle and the moon has fascinated civilizations for centuries. Throughout history, various cultures have speculated about the potential influence of the lunar phase on menstruation.

Menstrual Cycle and the Moon

The lunar cycle consists of several phases, with the new moon marking the beginning of a new cycle. Interestingly, some anecdotal evidence suggests a correlation between the new moon and changes in menstrual patterns.

Proponents of this theory argue that just as the moon waxes and wanes, so too do women’s menstrual cycles.

However, scientific research on this topic is limited. Some studies have attempted to explore the potential link between menstruation and lunar phases.

One  study published in the journal Acta Obstetrica et Gynecologica Scandinavia found that a small percentage of women had menstrual cycles that coincided with the lunar cycle.

Despite the lack of conclusive evidence, many women report experiencing changes in their menstrual cycles during the new moon phase. Some claim to have shorter or lighter periods. Others report heightened menstrual symptoms such as cramps and fatigue.

These anecdotal accounts are intriguing. More rigorous scientific investigation is needed to confirm any causal relationship between lunar phases and menstruation.

What Does the New Moon Mean in Your Period Cycle?

During the new moon phase, the moon is positioned between the Earth and the sun with its illuminated side facing away from the Earth. It makes it appear invisible from our vantage point.

Some theories propose that this alignment may exert gravitational forces that influence fluid dynamics within the body. These would include the flow of menstrual blood.

It is said that the gravitational pull of the mood during this phase may cause changes in fluid retention and distribution in the body. It can potentially affect the onset and duration of menstrual bleeding.

However, it is important to note that the gravitational force exerted by the moon is relatively weak. Any potential effects on the human body would likely be subtle and difficult to detect.

Indeed, some women may report experiencing changes in their menstrual patterns during the new moon phase. However, scientific studies have yielded mixed results.

In the study mentioned above, the researchers found only a small percentage of women exhibited menstrual cycles that aligned with the lunar cycles, casting doubt on the widespread belief in a direct correlation.

Despite that, many cultures around the world continue to attribute significance to the lunar phases of menstruation. From ancient civilizations to modern-day practices, the connection between the moon and the cycle persists in folklore and holistic health traditions.

Is It a Coincidence That Periods are Monthly?


The synchronicity between the cycle and the lunar month, both lasting approximately 28 to 29.5 days, has led to speculation about whether this is merely a coincidence or if there is a deeper connection between the two phenomena.

This alignment has intrigued scholars, scientists, and cultural observers for centuries, prompting exploration into the potential influences of natural rhythms on human biology.

One theory suggests that the similarity in duration between the menstrual cycle and the lunar month may have arisen from ancient civilizations using lunar phases as a natural calendar to track time, including menstrual cycles.

Without the convenience of modern timekeeping methods, such as clocks and calendars, early societies may have relied on observable celestial patterns, like the phases of the moon, to mark the passage of days, months, and seasons.

Over time, this association between lunar phases and cycles may have become ingrained in cultural beliefs and practices.

However, skeptics maintain that the alignment between the menstrual cycle and the lunar month is merely coincidental, with no causal relationship between the two phenomena. They argue that the duration of both cycles may be attributed to biological factors, instead of inherent connection to lunar phases.

Does the Moon Affect Hormones?

It has been a topic of ongoing scientific investigation and debate. Some studies suggest a potential link but the evidence remains inconclusive.

Although there is some evidence to suggest potential links between the moon and hormone regulation, the extent of these effects remains unclear.

What Factors Influence the Menstrual Cycle?

The menstrual cycle is primarily governed by changes in hormone levels, including estrogen, progesterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH). These hormones work together to regulate the growth and release of an egg from the ovaries and the thickening and shedding of the uterine lining.

Physical or emotional stress can disrupt the balance of hormones in the body, leading to irregularities in the menstrual cycle. Chronic stress may interfere with the functioning of the hypothalamus, pituitary gland, and ovaries, which are involved in regulating hormone production.

Significant changes in body weight, whether due to rapid weight loss or gain, can impact hormone levels and menstrual regulation. Women with low body weight or who engage in extreme dieting or exercise may experience irregular or absent periods due to disruptions in hormone production.

Intense exercise can also affect hormone levels and menstrual function. Athletes, particularly those involved in endurance sports with high energy expenditure, may experience irregular periods due to alterations in hormone balance.

Poor nutrition can also disrupt hormone production and menstrual function. Inadequate intake of essential nutrients, such as iron, calcium, and vitamins, may contribute to irregular periods.

Some medical conditions, like PCOS, diabetes, thyroid disorders, and reproductive disorders can affect hormone levels.

Should You Use Period Panties?

It depends on your preferences and menstrual needs. Period panties are designed to absorb menstrual blood and provide an alternative to traditional menstrual products.

If you wish to try period panties, though, you may purchase them here. For further inquiries about the menstrual cycle and the moon, you may consider reading this article.

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