Experts say dangerous sleep apnoea affects an estimated 8 million in the UK alone, and everything from evolution to obesity or even the climate crisis could be to blame Experts say dangerous sleep apnoea affects an estimated 8 million in the UK alone, and everything from evolution to obesity or even the climate crisis could be to blame The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more . The Guardian’s journalism is