'I'm lucky to be alive': Ashton Kutcher reveals he suffered from an autoimmune disease two years ago

"I'm lucky to be alive," Ashton Kutcher told adventurer Bear Grylls while appearing on an episode of

Running Wild With Bear Grylls: The Challenge

which airs Monday, August 15 on

as relayed by

on Tuesday, August 9.

The 44-year-old actor revealed his battle with vasculitis, an autoimmune disease that claimed to have robbed him of his sight, hearing and sense of balance, two years ago.

To the point that it would have “taken him a year to recover his senses”.

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In video, Ashton Kutcher reveals to have suffered from an autoimmune disease

"You don't really realize it until you say to yourself, 'I don't know if I'll ever be able to get my sight back,'" Mila Kunis' husband said of the disease that inflames blood vessels.

Before adding: “At that time, I also did not know if I was going to be able to hear or walk again.”

Read alsoPresident Zelensky FaceTimes Ashton Kutcher and Mila Kunis to thank them for their support for Ukraine

A 'terrifying journey'

The disease that the father of Wyatt, 7, and Dimitri Kutcher, 5, suffered from now recovered, has the most common symptoms of swelling and narrowing of blood vessels, fever, headaches and fatigue, detailed

.

At its worst stage, this disease can cause blindness or aneurysms.

After this "terrifying journey", Ashton Kutcher nevertheless felt that this ordeal had made him more "strong and resistant".

This would have allowed him in particular to “rise above his problems instead of undergoing them” and to make his life “more fun”.