Why the sleep industry is keeping us awake at night

We’re told that getting eight unbroken hours of sleep will protect us from cancer and dementia, and make us happier. But are we being sold an impossible dream?Hardly a day goes by without some new story about sleep in the papers, on TV or in our news feeds. Sleep is everywhere. We’re told relentlessly how much of it we need, what will happen if we don’t get it, and how much the economy loses through tired workers. Sleep experts broadcast their advice and opinions as if some new