United Kingdom, March 25 -- Niall Horan is worried he'll need a hip replacement in the future.

The 32-year-old singer - who had reconstructive surgery on his knee in 2014 - admitted the joints are already "going" and he fears they are only going to get worse as he ages because both his dad and his uncle have already gone under the knife more than once.

Speaking on The Zach Sang Show, he said: "My knees are f****ed. The hips are going now too.

"I think I was just genetically f***ed from the day I was born.

"My dad is 66 this year. He's just had a knee replacement.

"He's had a hip done 18 months ago.

"He's getting another hip done now."

When it was pointed out that his father is more than twice his age, he replied: "I know, but it wa...