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The human heart shows signs of ageing after just a month in space
Researchers sent engineered heart tissue to the International Space Station and measured how it fared.
The study offers a useful means of identifying the molecular pathways behind the detrimental effects of space flight on the human heart, says Joseph Wu, a cardiologist at Stanford University in California. But unpicking the effects on the heart of long-duration space flight — that lasting for months at a time — and the molecular changes that underpin those changes has remained out of reach, says study co-author Deok-Ho Kim, a biomedical engineer at Johns Hopkins University in Baltimore, Maryland. This suggests that NASA astronauts Sunita Williams and Butch Wilmore — who have been stuck on the ISS for months owing to technical problems with Boeing’s Starliner spacecraft — are probably experiencing cardiovascular stress that will resolve after they return to Earth, say Wu.
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