The Truth About Menstruation and Swimming
The question of whether girls and women can swim during their period is a common one, often surrounded by a surprising amount of misinformation. For generations, a lingering myth has suggested that swimming while menstruating is unsanitary, dangerous, or simply impossible. However, scientific understanding and modern menstrual hygiene products have largely debunked these concerns. Let's dive into the facts.
Is it Unsanitary to Swim on Your Period?
The idea that swimming on your period is unsanitary stems from an outdated understanding of hygiene and the menstrual cycle. While it's true that menstrual fluid is released during menstruation, the amount is relatively small, especially when compared to the vast volume of water in a swimming pool or natural body of water.
The key takeaway: Modern hygiene practices and products make swimming during your period perfectly safe and hygienic for both the swimmer and others.
Here's why:
- Low Volume of Blood: On average, a person loses about 30 to 80 milliliters of blood during their entire period, which is roughly equivalent to a small shot glass. This amount is not enough to significantly contaminate a swimming pool.
- Pool Sanitation: Swimming pools are treated with chemicals like chlorine, which are highly effective at killing bacteria and other microorganisms. These chemicals are designed to maintain a sterile environment, and they easily handle the minuscule amount of menstrual fluid that might be released.
- Water Pressure: When submerged in water, the pressure of the water itself can actually help to slow down or temporarily stop the flow of menstrual blood. This means that a lot less fluid is likely to escape into the water than one might imagine.
Can Menstrual Blood Attract Sharks?
This is another persistent myth, particularly prevalent in areas with coastal access. The idea is that the scent of menstrual blood in the water will attract sharks, posing a danger to swimmers.
The reality: While sharks have an incredible sense of smell and can detect minute amounts of blood in the water, the amount of menstrual fluid released during swimming is unlikely to be a significant attractant. Sharks are more likely to be attracted by larger quantities of blood from an injured animal or fish. There is no scientific evidence to support the claim that menstrual blood poses a unique or heightened risk from sharks.
Here's what to consider:
- Quantity Matters: As mentioned, the amount of blood is very small.
- Other Attractants: Sharks are often more attracted to the presence of fish, seals, or other marine life that they typically prey on.
- Studies on Shark Behavior: Research into shark behavior and feeding habits has not identified menstrual blood as a primary attractant.
What are the Best Options for Swimming on Your Period?
Fortunately, there are several excellent and discreet options available for women who wish to swim while menstruating. These products are designed to provide protection and comfort, allowing for normal activity.
Your primary choices include:
- Tampons: Tampons are inserted into the vagina and absorb menstrual flow before it leaves the body. They are highly effective for swimming as they create a seal and prevent leakage.
- Menstrual Cups: Menstrual cups are small, flexible cups made of medical-grade silicone that are inserted into the vagina. They collect menstrual fluid rather than absorb it. Cups can be worn for up to 12 hours and are excellent for swimming, as they create a strong seal and have a large capacity.
- Period Swimwear: This is a newer innovation in menstrual hygiene. Period swimwear looks and feels like regular swimwear but has a built-in absorbent layer and leak-proof technology. These are ideal for lighter flow days or for added security.
Important Considerations for Swimming on Your Period:
- Choose the Right Absorbency: If using tampons, select one with an appropriate absorbency for your flow.
- Change Regularly: Even with these products, it's good practice to change tampons or empty menstrual cups as needed, especially after extended periods of swimming or if you have a heavier flow.
- Proper Insertion: Ensure tampons or menstrual cups are inserted correctly to create a secure seal and prevent leaks.
- Dispose of Waste Properly: Always dispose of used tampons and applicators in designated trash receptacles, never flush them.
When Might You Consider Not Swimming?
While generally safe, there might be a few specific circumstances where a person might choose to avoid swimming or take extra precautions:
- Extreme Discomfort or Pain: If your period is causing severe cramps or debilitating pain, you might simply not feel up to swimming. This is a personal choice based on comfort levels.
- Very Heavy Flow: On days with an exceptionally heavy flow, some individuals might feel more comfortable opting for a different activity, even with the protection of tampons or cups, to avoid any potential concerns about leakage or the need for frequent changes.
- Open Wounds or Infections: If you have any open wounds or a vaginal infection, it's generally advisable to avoid swimming to prevent further irritation or the spread of infection.
Frequently Asked Questions (FAQ)
Why does the myth persist that girls can't swim during their period?
The myth likely stems from a combination of historical societal norms that viewed menstruation as "unclean" and a lack of widespread knowledge about effective menstrual hygiene products. Older generations may have received this advice before tampons, cups, and specialized swimwear were readily available or widely understood.
How much menstrual fluid actually enters the water when swimming?
Very little. The water pressure can slow or stop the flow when submerged, and modern products like tampons and menstrual cups are designed to contain menstrual fluid effectively, preventing significant amounts from entering the water.
Can I use a pad while swimming?
No, pads are not suitable for swimming. They are designed to absorb fluid externally and will become saturated very quickly in water, becoming ineffective and uncomfortable. They will also likely disintegrate or fall off.
Do I need to worry about contracting or spreading infections when swimming on my period?
With proper hygiene and the use of tampons, menstrual cups, or period swimwear, the risk of contracting or spreading infections through swimming during your period is extremely low. Pool sanitation further minimizes this risk.
Will swimming make my period cramps worse?
For many people, swimming can actually help alleviate period cramps. The physical activity and the buoyancy of the water can be soothing and relaxing. However, if your cramps are severe, it's always best to listen to your body.

