Professor Tim Spector

No, it's your own fault.

You're in a bad mood.

Why are you in a bad mood?

All these studies, you know, we've got four studies now where we're changing people's diets and they're going, they've been on generally bad diets, we're moving to good diets.

that mood, particularly energy levels, the first thing they notice, they're improving.

And they never linked

Just like you, their mood and energy levels with things like diet, it was just inherent.

They thought, oh, it's just because I'm, you know, my life's shit or whatever it is.

An extreme example is some families we've been working with doing a Channel 4 series at the moment called What Not to Eat.

And we visit four families and they've got terrible diets.

And we transform them, give them a gut-friendly makeover diet, look at them after six weeks.

The first thing they all notice is their mood and energy is dramatically increased.

They were napping all the time.

They were asleep all the time during the day.

What were they eating?

Crap food.

highly processed crap food and snacking late at night, bars of chocolate, sodas, chicken nuggets, pot noodles, rubbish food, right?

So these were worse than your average, but still there's millions of people like that doing this.

And they had no clue that it was linked.

to them feeling terrible and tired all the time.