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I'm no longer ravenous. I'll no longer eat until I fall asleep.

The Hunger Game, a new five-part series exploring the meteoric rise of weight loss drugs.

It's been an incredible story with these drugs.

The uptake, the amount of product that's been sold, the amounts of money

is cost. What the drugs do, how they work, and the knock-on effects of their widespread use.

We'll be sitting here in three years' time going, oh, it caused problems that we're now going to have to

fix. The Hunger Game with me, Professor Gilesio. Listen first on BBC Sounds.

Hello, imagine you're listening to a Mozart opera, or if you prefer a Taylor Swift song,

and the music is accompanied by a rainbow of colours only you can see. Perhaps while listening to

this sentence, you're experiencing a smorgasbord of tastes with different words

evoking different flavours, maybe a delicious ice cream, or something as disgusting as earwax.

This merging of the senses is known as synesthesia, and it's the rich research world of my guest

today, neuropsychologist Julia Simner. Julia runs the multi-sense lab at the University

of Sussex and over the last 20 years, she's pioneered research into understanding how special brains

process our sensory world in special ways. She's discovered links to autism and to different

personality types, as well as a number of previously unknown sensory

differences. Julia describes her career in her life as a series of swerves or sliding door

moments that have led her to study the subject and the people she's passionate about. She says

that the more she looks for these unusual traits in us, the more she finds, and that maybe one day we'll all be able

to map our own sensory differences. Professor Julia Simner, or Jules, as you prefer to be called,

welcome to the Life Scientific. Hi, Jim, thank you so much. It's really lovely to be here. I bet a lot of

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