Is eternal youth worth having? A middle-aged tech millionaire seeks the secret to never-ending adolescence for the affordable price of £1.6m per year. But is never growing old all it is cracked up to be?
The man spending millions to be 18 again
Price of youth: Johnson spends millions every year on experimental treatments to de-age his organs. Glossary
Mesopotamia - A historical region of the Middle East, mostly centred on modern-day Iraq, Kuwait and parts of Syria and Turkey. The name "Mesopotamia" in Greek means "between rivers" because of the Tigris and Euphrates that run through it.
Immortality - Staying alive forever.
Eternal - Lasting forever.
Elixir - A medicinal or magical potion.
Artificial Intelligence - Artificial intelligence, or “AI,” is the ability for a computer to think and learn. With AI, computers can perform tasks that are typically done by people, including processing language, problem-solving, and learning.
Bowels - The long tube that carries solid waste out of the body.
Vanity project - A project which adds minimal value to the world, but makes the person who is running it happy.
Dementia - A syndrome associated with memory loss and other declining brain functions.
Stigmatising - Disapproving of, or discriminating against, a person based on perceivable characteristics. It’s the opposite of respecting and recognising someone or something, especially when it comes to mental health conditions.