Menstrual Cups Pass First Space Flight Test, Paving Way for Astronaut Health Autonomy
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A new study demonstrates the viability of menstrual cups for use in space, addressing a previously overlooked aspect of long-duration space travel and bolstering health autonomy for female astronauts. Published on December 2 in the journal NPJ Women’s Health, the research offers a potential solution to the challenges of managing menstruation beyond Earth, where traditional waste management systems are ill-equipped to handle biological waste and single-use products create logistical burdens.
Rocket Test Confirms Menstrual Cup Durability
In 2022, a research team dubbed AstroCup subjected two Lunette brand menstrual cups to the rigors of space flight. The cups were launched on an uncrewed rocket that reached an altitude of 1.9 miles (3 kilometers) over a nine-minute period, exposing them to significant vibration and stress. Subsequent leak tests, utilizing glycerol and water to simulate fluid dynamics, revealed no structural damage or material degradation to the cups. This successful trial suggests that menstrual cups can withstand the initial stresses of launch and remain functional in a space environment.
Menstrual cups are gaining popularity on Earth as a reusable and sustainable alternative to tampons and pads, offering a cost-effective and environmentally friendly solution for managing menstruation. Their reusability is particularly appealing for space travel, where minimizing waste is paramount. While many astronauts currently utilize hormonal suppression to temporarily halt their menstrual cycles, this approach isn’t universally desired or feasible for all individuals, especially as missions extend in duration and scope.
Beyond Suppression: Addressing the Future of Space-Based Menstruation
The AstroCup team envisions menstrual cups as a crucial step toward greater health autonomy for astronauts. “Now we can start implementing and redefine health autonomy in space,” stated Lígia Coelho, astrobiologist and lead researcher of AstroCup, in a recent statement. However, the study authors acknowledge that further research is needed to assess the performance of menstrual cups in reduced gravity and during longer-term missions, particularly regarding ease of removal and content management. The team hopes to conduct future tests on the International Space Station, comparing the efficacy of various menstrual products.
Currently, most astronauts who menstruate choose to temporarily pause their cycles through continuous birth control pill usage – skipping the placebo pills in a monthly pack. This method is considered safe for many and can alleviate symptoms like cramping and low energy. Other hormonal options, such as intrauterine devices (IUDs), are also possibilities, but their performance in space remains unstudied. It’s important to note that progestin-only IUDs and implants can sometimes cause breakthrough bleeding, potentially negating their benefit in eliminating the need for period products.
Hormonal Considerations and the Long-Term Vision
While hormonal suppression offers a temporary solution, it’s not without potential drawbacks. Added estrogen, both on Earth and in space, carries risks like increased blood clotting. Furthermore, the impact of combined oral contraceptives on bone density in a space environment requires further investigation. As the study authors point out, effectively managing menstrual cycles will be essential if humanity aims to establish a permanent presence beyond Earth, and ultimately, reproduce in space.
“More women will have the opportunity to go to space for even longer missions, and it is paramount that their autonomy on menstrual options is respected,” the authors of the NPJ article wrote. They emphasize that future astronauts may choose to continue menstruating for personal, health, or reproductive reasons.
The successful rocket test of menstrual cups represents a significant stride toward ensuring that the unique health needs of all astronauts are met, paving the way for a more inclusive and sustainable future in space exploration.
