More than one in 10 millennials reckon the world is controlled by lizards in human form.
A poll found 12% of those aged 24 to 35 said they believed in the Reptilian Conspiracy Theory.
The idea, championed by former BBC presenter and Hereford United goalkeeper David Icke, states that shape-shifting reptilian aliens have ruled the Earth for centuries.
He claims that rulers – including American presidents and members of the Royal Family – are really “reptilian humanoids” who control and manipulate human societies for their own gain.
Icke, 69, has supporters in nearly 50 countries and regularly gives lectures about his beliefs to crowds of up to 6,000 followers.
The study of 2,000 Britons, by ToppCasinoBonus.com, found that millennials were the age group most likely to believe that the world is controlled by alien lizards.
Just 2% of those aged 55 and older were convinced by the idea.
Andy Unsworth, 28, of Chesham, Bucks, said he was open to “out there” ideas. He said: “Although it sounds absolutely bonkers when you look at the world now you could be forgiven for believing that we are being run by a bunch of alien lizards.
“The world is in turmoil and our leaders do seem to get away with anything and everything – Donald Trump, Biden, Boris Johnson… the list goes on.”
He added: “It does point to something odd happening and I’m not averse to the theory that many world leaders are really cold-blooded reptiles underneath.”
The bizarre belief comes as ministers are being urged to take tougher action against any social media companies which fail to stamp out anti-vaccination content online – including the myth that new 5G phone networks could spread Covid.
Prominent anti-vaxxers on Instagram, Facebook and Telegram still have nearly 1.5million followers, analysis compiled by the Labour Party showed.