Are we addicted to technology?

Just five minutes after meeting sleep and energy expert Dr Nerina Ramlakhan in her central London clinic, she delivers some bad news.

"You've got the classic pattern of someone who's in a fatigue cycle," she says.

"You're running on survival energy. Your sympathetic nervous system is in overdrive. I would guess you feel pretty shattered mid-afternoon which would mean you are running on adrenalin, noradrenalin, cortisol. "

I'm turning into a dopamine junkie - the brain chemical associated with pleasure that is released when we are stimulated, whether that is by food, sex, excitement... or screen time.

It sounds convincing. Or am I being blinded by pseudo-science?

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