The musician from Doncaster, 28, who is bringing his Idols World Tour to the UK in April 2026, was due to play concerts across the US in November.
In a social media post, he said: "This year has been truly unbelievable and I feel so lucky and honoured from everything that has happened.
"This week when I got home off the road, and went to have some tests done (like I usually do) and my voice and blood tests have raised some concerns. I have been ordered by my doctor to take a break from touring until the end of the year.
"It is in my nature to run and run until l run myself to the ground without giving a f*** about anything apart from the music and you guys but this time I've been told I have to take it seriously and I can't f*** around.
"I'm so sorry to do this. But reluctantly I have to cancel the shows through the end of the year. These include Philadelphia, Cleveland, Washington, Mexico City and Latin America - My heart is broken.
"I don't want to do any lasting damage to myself, we are on a journey that I want to last forever. I understand that some of you will be frustrated. I just want you to know that this is so hard for me to do but I promise I will make it up to you.
"All US tickets will be refunded. If you sign up with an address at the link I will send you a gift. I never take anyone's love, support or energy for granted. You know you are everything to me. But I need this time.
"USA I will see you next year. Mexico and LATAM we are already looking into my own shows down there that will be more affordable for next year too. It's gonna be unbelievable. I can't wait. Dom x"
Yungblud, real name Dominic Harrison, has been touring his new album Idols, which was released in June.
The singer recently received a Grammy nomination for the record in the best rock album category, alongside a nod for best rock song for his single Zombie.
He has also been nominated for his performance of Changes at Black Sabbath's Back To The Beginning farewell concert, which took place weeks before the death of Ozzy Osbourne.
The singer, known for songs including I Think I'm Okay, featuring Machine Gun Kelly, and Fleabag, is also known for creating BludFest, which offers cheaper tickets compared to many other UK music festivals.
The singer has had three number one albums in the UK chart with Weird! in 2020, his self-titled album in 2022 and Idols.
Earlier in the year, he received the disruptor of the year award at the Nordoff and Robbins Northern Music Awards, held in Liverpool.
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