Hello, you're about to listen to a BBC podcast, and I'm Ed Gamble, host of another BBC podcast,

The Traitors Uncloaked. But my show is available only on BBC Sounds, just like Ellis and John's

Saturday bonus episodes, the Pop Top Ten podcast with Scott Mills and Ryland, and comedy specials

from the likes of Harriet Kemsley, Susie Ruffel and Rommas Shranger Nathan. However, and maybe I'm biased, it's really all about the traitors uncloked.

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Hello, coming up today, intelligent liver tests.

We're forever being told how tech is going to

transform healthcare, but not all such advances live up to the hype. This new system, which

helps GP spot and manage early liver disease, does. And talking of tech, coming up later,

we have an insider's view on how to get the best out of the internet.

Professor Carl Hennigan and Dr Margaret McCartney will be sharing their tips in a new series starting today.

But first, obesity and cancer and the new awareness campaign by Cancer Research UK,

comparing being overweight to smoking.

Ads showing what looked like packs of cigarettes,

with the words obesity causes cancer too have upset quite a few people, including a group

of academics, healthcare professionals and patient groups who've written an open letter to the charity.

They accused the campaign of undermining decades of work to address the harmful effects of stigmatising weight

and say that comparing obesity to smoking as a risk factor for cancer is both inaccurate and misleading.

GP, Dr Margaret McCartney, who's in our Glasgow studio, was not a signatory to that letter,

but shares some of the concerns that it raises.

And in our

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