General, Research, Technology

The hearts of astronauts in zero gravity take the shape of a ball

When astronauts have been in zero gravity for a long time, their hearts take a more rounded shape and lose muscle mass. Research has shown that it can cause heart disease.


As part of the study, cardiologists usingThe ultrasound was studied by the hearts of 12 cosmonauts working on the International Space Station. Pictures were taken before, during and after the flight. Image analysis showed a 9.4 percent heart rounding. Researchers note that changes in the heart can be predicted using mathematical models - this will give doctors on Earth a better understanding of heart disease.

Spherical heart shape can reducethe effectiveness of his work. However, this condition is temporary - after the astronauts return to Earth, their hearts take their previous elongated shape, the researchers note. At the same time, the long-term effect of this change has not yet been studied.

At the end of the flight, astronauts often experiencedizziness due to a sharp decrease in blood pressure. This condition is known as orthostatic hypotension. Space flights also cause arrhythmias, and increased radiation can accelerate the development of atherosclerosis.

Researchers are currently transferring theirmodels for studying diseases such as coronary heart disease (the most common cause of death for millions of people around the world), hypertrophic cardiomyopathy (thickening of the heart muscle, which limits the ability of the heart to pump blood) and deformation of the heart valves.

Scientists pay a lot of attention to health issues. Recently, they even found a way to make their heart beat forever.