05/11/2026
"The idea of a third circulatory system will not come as a surprise to anyone who practices traditional Chinese medicine. “This knowledge is actually quite ancient,” one professor told Cooper. “It’s something that other systems of medicine have been offering for a long time, but they didn’t have microscopes.” Mention the interstitium to an acupuncturist and you might get an eye roll, like, “No kidding.” (Ask me how I know.)
Acupuncture works, of course. The studies are clear. People seek it out for treatment of all sorts of ills, from chronic pain and migraines to anxiety and insomnia. The discovery of the interstitium, Cooper writes, may help us better understand how it works."
The detection of another circulatory system in the human body could have enormous scientific implications.