From shrinking hearts to squashed eyeballs – the horror of how space affects the human body revealed

TIME in space can make your heart contract, clog your eyeballs, and cause your blood cells to self-destruct.

These are just some of the health conditions astronauts face, and scientists fear that longer space travel could cause more problems.


From a shrinking heart to kidney stones, we’ve rounded up 5 related things space can do to your body.

Heart shrinks

Time in space can shrink your heart, according to one fairly recent research on a Nasa astronaut.

Last year, it was revealed that Nasa astronaut Scott Kelly’s heart contracted during 340 days aboard the International Space Station.

Researchers monitored his heart from afar from Earth and noticed it contracted despite the astronaut’s regular exercise.

His heart had returned to its normal size when he returned to Earth.

The researchers concluded that space shrinks the heart because the heart doesn’t have to pump against gravity.

This is thought to reduce the strain on the heart and cause it to lose volume.

Lack of space blood

Space causes the human body to destroy its own red blood cells, and scientists don’t know why.

The strange phenomenon is known as space anemia, and new research shows it harms astronauts even when they return home.

A new study published in Natural Medicine discovered that space causes the human body to destroy red blood cells at a faster rate than on Earth.

The researchers worked with 14 astronauts over a six-month period.

Their results show that the astronauts are destroying about three million red blood cells every second.

54% higher than the average here on Earth.

Five of the 13 astronauts who had their blood drawn upon landing back on Earth were still anemic.

After a year, their red blood cell destruction was still higher than in those who had never been to space.

According to research, the longer a person is in space, the longer they will suffer from anemia on land.

Flat eyeball

It is not uncommon for astronauts to suffer a range of vision and eye problems after spending a certain amount of time in the air. space.

This is due to the crew’s zero-gravity conditions, which can cause body fluids to build up in the head.

That puts pressure on the eyeball and causes a condition called spatial light-associated neuropathy syndrome (SANS).

Other eye problems can range from flattened eyeballs to swelling of the optic nerve and poor vision.

The risks to these problems are especially high for astronauts who stay in space for more than six months.

ONE body sucking sleeping bag Pulling fluid out of the head and down the legs is one potential solution to this problem.

Waste of bones

Time in space can also weaken human bones.

Nasa website explain: “Nasa has learned that without Earth’s gravity affecting the human body, weight-bearing bones would lose an average of 1% to 1.5% of their mineral density per month during space flight. .

“After returning to Earth, the bone loss may not be completely rectified by rehabilitation; however, their fracture risk is not higher.”

There is concern that bone loss could be even worse on longer missions, like those planned to Mars.

Kidney stones

Astronauts are prone to kidney stones because of problems with the way bones demineralize due to the weightlessness of space.

If a kidney stone enters the urinary tract, it can obstruct it and cause debilitating pain.

It can also lead to infection and swelling of the kidneys so a lot of people with kidney stones on Earth are hospitalized.

Astronauts have no option

Increased hydration can sometimes help prevent problems, but scientists are also investigating other potential therapies.

Space is making human blood self-destruct and scientists are completely confused

In other news, Nasa has keep an eye out for eight asteroids are all set to make a ‘close approach’ to Earth in January.

Ancient life on Mars was a possible explanation for a recent discovery by Nasa’s Curiosity rover.

And, China has built an ‘artificial moon’ to train astronauts for future missions. From shrinking hearts to squashed eyeballs – the horror of how space affects the human body revealed


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