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The shocking things 286 days in space does to a human body

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Astronauts Butch Wilmore and Suni Williams have finally returned to Earth after nine months on the International Space Station .

Experts warn that their unplanned stay on the ISS could have serious health impacts.

Shocking before-and-after images show the terrifying damage that months spent in space will do to you.

From 'chicken legs' and 'baby feet' to an increased risk of deadly cancer, experts warn that the stranded astronauts could face years of health complications.

Most astronauts return to their re-mission fitness level after the 45 days .

But it can take months or even years for some to recover, and many never fully restore bone density.

A 30 to 50-year-old astronaut who spends six months in space loses about half their strength.

This puts them at greater risk of bone fracture and premature osteoporosis, which weakens bones as people age.

Studies have shown that spending six months on the ISS wreaks havoc on the skin.

Epidermis gets thinner by nearly 20 percent in space, perhaps due to low gravity.