Radio 4 in Four - Why is snacking between meals so addictive? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - Why is snacking between meals so addictive? - ÃÛÑ¿´«Ã½ Sounds
Why is snacking between meals so addictive?
Jay Rayner asks Professor Barry Smith why it's so hard to resist the urge to snack.