Frayne was diagnosed with Crohn's disease when he was a teenager, and had part of his intestine removed when he was 17 years old. In 2018, he posted a video to Twitter discussing his struggles with the disease following a severe bout of food poisoning in 2017, which led to him suffering from severe arthritis, weight gain and rashes. In June 2020, Frayne issued a High Court writ for damages in excess of £200,000, against the franchise owners of his local fast food outlet for damages, alleging food poisoning, due to his consumption of uncooked chicken.