“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 was clearly in there.
“My uncle had two knees done. Like, it’s a thing.
“I think I was just ruined from the day I was born.”
The former One Direction singer’s girlfriend, Amelia Woolley, was a “muse” for many of the songs on his new album Dinner Party, and she was very touched by some of the more emotional songs.
Niall admitted: “She did a lot of crying.”
The Slow Hands singer is also trying to track down a fan to give them a writing credit after his song Flowers stemmed from something one of them commented online.
He explained: “It came from a tweet.
“I’d posted something and one of the fans had written underneath it, ‘Your eyes could grow flowers.’
“I just thought that was a really cool concept, straight from a fan.
“I need to find that person because I need to give them their writing credit.”
Niall recently gushed about the contentment he has found with his “amazing” girlfriend Amelia, whom he has been dating since 2020.
He told GQ Hype: “Having someone to rant with and listen to and be listened to is huge. I’m glad I found it.
“And she’s amazing, and she’s got her own thing going on. I love the life that we’ve got.”
The couple enjoy a simple life together, but frequently find their weekends just disappear.
Niall admitted: “We’re also big procrastinators. Friday’ll come, and I’ll be like, ‘Can’t wait for the weekend’, and then Sunday night comes and we’ve done nothing. We spent the whole weekend in the house.”