John Lennon's son Julian Lennon has been diagnosed with coronary heart disease (CHD).
The 63-year-old singer-songwriter has urged his fans to "get checked out sooner than later" in case they have hidden health issues, after he was diagnosed with CHD - a type of heart disease that occurs when a heart's blood supply is blocked or interrupted by a build-up of fatty substances in the coronary arteries - and as a pre-diabetic.