This is the short edition of Morales, first broadcast on the BBC World Service.

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Hello and welcome to Morales on the BBC World Service with me, Wesley Stevenson.

Later in the programme we're heading off to Cuba to answer a listener's question

about whether the country has managed to eradicate child malnutrition.

But first, is there a link between mental illness and creativity?

Take Brian Wilson of The Beach Boys as an example, he's thought to encapsulate this theory.

A musician whose creativity almost seemed to go hand in hand with his descent into mental illness

as he worked on his masterpiece album Pet Sounds.

Sometimes I feel very sad.

It's an interesting theory, but can you prove it scientifically?

A recent study by researchers in Iceland sought to establish whether it was possible to predict

how creative someone was by studying individuals DNA.

Dr. Cari Stevenson from the company DeCode worked on the paper.

He took all of the variants in the human genome that I've been shown to associate

with schizophrenia.

We put together a social polygenic risk score.

So the higher you risk score, the more likely you are to develop in schizophrenia.

And then we asked the question, is this polygenic risk or higher in the members of the creative professions?

And we looked at members of the association of Icelandic writers and painters and composers, etc.

...