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Is Period Syncing a Real Thing?



5 min read

Thinx Periodical Is Period Syncing a Real Thing

by Team Thinx | 06/30/2023

If you, like us, have a period, there are probably some questions you’ve been curious about: like “how long do periods last, anyway?” and “is period syncing real?” Period syncing in particular has long been a popular topic of intrigue, curiosity, and urban legend. The idea that menstrual cycles can synchronize when people spend time together has sparked numerous discussions over time. In this article, we’ll dive into the concept of period syncing, exploring its validity and shedding light on common misconceptions.

what is period syncing?

Period syncing refers to the belief that menstrual cycles can align when individuals live or spend a lot of time together in close proximity. Most of the time, personal experiences have fueled discussions around period syncing, but let’s see what scientific research says to confirm or deny this theory. 

understanding the current science behind period syncing

  1. hormonal factors influencing menstrual cycles

Hormone levels play a crucial role in regulating menstrual cycles. The synchronization of hormonal fluctuations between people in close proximity might contribute to period syncing. While the exact mechanisms are still being investigated, it is believed that certain hormonal signals may be exchanged between individuals. So, the synchronization of hormonal fluctuations between people in close proximity might actually contribute to period syncing.

  1. synchronization theories

Several theories have been proposed to explain period syncing. The most notable one suggests that pheromones, which are chemical signals released by the body, could play a role in synchronizing menstrual cycles. While some studies have supported this theory, further research is still necessary to validate these menstruation claims.

factors affecting period syncing

  1. proximity and social interaction: Living or spending significant time in close proximity allows for increased social interaction, which may influence hormonal regulation and potentially lead to period syncing. Shared living spaces, such as college dorms or apartments, provide opportunities for potential period synchronization.

  2. shared environmental factors: Environmental factors, such as light exposure, stress levels, and lifestyle habits, may also contribute to period syncing. Researchers believe that external influences like these can affect hormone production and disrupt or align menstrual cycles with people in the same environment.

  3. psychological and emotional connections: Psychological and emotional connections among individuals may influence hormonal balance and potentially impact menstrual cycles. Stress, emotional bonding, and empathy within social circles might contribute to period synchronization.

debunking the myths about period syncing 

1. period syncing is a total myth

Contrary to popular belief, menstrual cycle syncing is not fully agreed upon as a myth. While the phenomenon is not yet fully understood, it cannot be dismissed outright.

2. only individuals living in close proximity can experience period syncing

Period syncing is not solely limited to individuals living together. Even those who spend a significant amount of time in close social settings, such as colleagues or close friends, may experience a degree of period syncing. 

3. period syncing is a coincidence 

Period syncing is not merely a result of coincidence. Hormone levels, pheromones, and environmental factors are all potential contributors to menstrual cycle syncing. While more research is needed, it is clear that chance alone cannot explain the period syncing patterns.

embracing a period-positive future with Thinx

At Thinx, we encourage open conversation about menstruation and we want to continue unraveling mysteries surrounding periods. Along with open conversation, we support and provide period solutions for all individuals who menstruate. We offer innovative period products made for comfort and peace of mind. Choose Thinx for comfort and a period-positive future. 

At Thinx, we strive to provide our readers with the most up-to-date, objective, and research-based information. Our content is crafted by experienced contributors who ground their work in research and data. Articles contain trusted third-party sources that are either directly linked within the text or listed at the bottom to lead readers to the original source.


Cleveland Clinic. The Myth and Truth About Periods Syncing Up with Your Close Friends.

Healthline. Period Syncing: Real Phenomenon or Popular Myth? 

PubMed. Period Syncing: Myth or Reality?

Women’s Health Magazine. The Truth About Cycle Syncing and How It Can Affect Your Hormones.

by Team Thinx

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