The former Top of the Pops and Radio 1 star said his wife Gudrun and close friends helped keep his spirits up.
David, 71, said: “I will always be indebted to those who have helped me over the past 12 years with Parkinson’s disease.”
“My good friends and those like Chris Tarrant and Jools Holland, who were among the first to pick up the phone.”
Born in Canada, David was nicknamed “Kid” when, at the age of 18, he became the youngest radio presenter in Europe to join Radio Luxembourg in 1968.
More than 50 years later, he is still best known for his famous nickname.
David, a father of three, has now lifted the lid on his ordeal with Parkinson’s disease.
In an exclusive interview with Radio Times magazine this week, the veteran DJ explained how high hopes are that a cure for the degenerative brain disorder will be found.
He said: “There is real hope and I am realistically following the latest encouraging developments.”
“Those in the know suggest I am doing well, thanks to diligent exercise and following all medication instructions.
“82 years old – that’s the last answer when I ask the experts: ‘How long am I?'”
“So I probably won’t be around in my 90s, unlike a lot of my family members.”
“I’m 71 now – and still a kid!”
David’s big breakthrough came in 1976 when he landed the mid-morning Saturday slot on BBC Radio 1 before being promoted to the afternoon show.
As well as being one of the most recognized voices in the UK, her profile has been boosted by regular appearances on Top of the Pops. In 1984, he left Radio 1 and joined Capital FM in London.
In recent years, he has hosted “golden oldie” shows. But his illness has slowed down his once phenomenal production.
However, he presented a recent series for Jazz FM called Jensen’s Jazz and he also broadcasts a weekly online show on Boom Radio, insisting he is not ready to hang up the mic just yet.
David added: “I hope my voice sounds pretty much like it used to. That’s definitely what people are telling me. excitement of doing radio is extremely valuable.”
Parkinson’s disease causes uncontrollable movements, such as shaking, stiffness, and difficulty with balance and coordination.
Read the full interview in Radio Times, available now.