Tim DraperFounder and Managing Partne, Draper Associate · I back the ideas that look crazy first

Did you know that menstrual blood contains 600,000x more stem cells than the blood in your veins? 🩸

1 Apr 2026 · 2 min

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1:35

In a brief interview, a Muse Bio representative (Speaker A) explains that menstrual blood releases millions of stem cells each month, claiming these cells are superior—healing without scarring and proliferating twice as fast as other sources. They assert menstrual blood contains roughly 300,000 to 600,000 times more stem cells than venous blood, positioning it as the optimal source for large‑scale regenerative medicine. Muse Bio has built a platform that includes donor collection sites, a laboratory and stem‑cell bank, and a donor community. They already sell a skincare product that leverages the “menstrual rejuvenating powers,” generating revenue that funds further R&D into clinical therapies. When asked about potential opposition, the speaker notes that stem‑cell work often faces political pushback due to associations with fetal or embryonic sources, but argues menstrual blood sidesteps those ethical concerns because it does not involve abortions or embryos.

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Women release millions of stem cells every month when they menstruate, and these cells are superior to all other stem cell sources. They heal without scarring and they grow twice as fast as any other stem cell, and that makes them the best fit for regenerative medicine at scale. And that is exactly what we're doing. So the Muse Bio platform, one source, menstrual blood, many solutions. We've got ingredients, products, and clinical therapies. So we've set up their donor collection sites, we've set up the lab and stem cell bank, we've set up the donor community, and we even have a product that is making money now. The skincare manufacturers want our menstrual rejuvenating powers, and so we are able to fund our R&D while making people look young and beautiful.
How many more stem cells did you say it was than ordinary blood?
So a rough calculation is that there are 300,000 to 600,000 times more stem cells that can be from menstrual blood than from the blood in your veins.
Okay, what business population or politician would be upset by what you do? And what might you be up against?
There's been a whole pushback against stem cells because there's this notion that you need to have an abortion, it comes from fetuses, it comes from Like embryos, and we don't need to do that anymore. We can get it straight from the source, no ethical barriers.