The skin of a 28-year-old, a billionaire’s bank balance. Has this 45-year-old found eternal youth?

Even in a week when I had big issues to obsess over – whether my parents need a trainer for their toy poodle who veers between adorable and Danny Glick from Salem’s Lot, what to wear to my son’s 30th (theme: festivus, ideas gratefully accepted) whether booking a small group tour holiday is cool or giving up on life – one man and his story were on my mind.

Bryan Johnson, a Silicon Valley tech mogul. I’d never heard of him until he popped up in my news feed. Now I’m stalking him at all hours.

Short version is that when he sold his payments processing company for $800 mill, the 45-year-old wanted to spend his time and cash wisely. Rather than become a student of Keith Urban’s “Play 30 songs in 30 days” program or explore Bhutan by wheelbarrow, Johnson started a quest for eternal youth.

He’s spearheading a new war on ageing which is seeing other really rich people try to turn back time. Billionaire Peter Thiel has cancelled death: “Basically, I’m against it.” There’s even a thing called the Rejuvenation Olympics. But nobody is going at it with the same hammer and tongs as Johnson. He’s next level.

As outlined on his website, his goal is to reverse biology and restore each of his 78 organs to those of an 18-year-old. He reckons he can do it for, oh, about $2 mill a year, with the help of 30 doctors. So far, he’s tracking beautifully: his skin is back to being 28, his lung capacity is 18 and his gums could medal at worlds –17 years old!

Of course, you may want to try it at home. Thing is, Johnson’s regimen involves more than chucking out the Cheezels and pulling on the KT26s for Park Run. Think rising at 5 am to work out for an hour, a strict vegan diet with exactly 8271 daily kilojoules and 30 kgs of vegies a month, two dozen supplements and “fat scaffolding” injected in your face.

Still, “It’s surprisingly approachable and affordable,” he told Nine’s Today show on Thursday, urging us to “narrow down″⁣ the “worst self-destructive behaviours” and prioritise sleep. His next plan: to share his “science-backed protocols” with the public. For free. Yes!

Sound a bit full on? Maybe you’ll win the genetic lottery. If your parents lived to a ripe old age, you’re more likely to too. There are 593,000 people worldwide aged over 100 and the United Nations predicts that will hit 3.7 million by 2050. Researchers last month published a study saying they had apparently reversed ageing in mice by fixing “glitches” in their genes.