thank you very much, chris theobald, senior policy and campaigns manager at guide dogs. people lose weight is being used for the first time on the nhs. it's a tablet which turns into a balloon after it's swallowed, making the patient feel fuller for longer, so they eat less. amanda parr has the story. dave from yeovil is feeling pretty relaxed about this morning's procedure. it will be in and out, very simple, no endoscopy, no hospital bed, no theatre time or anaesthetic. he has worked out the best mental approach too. everybody�*s sort of like opinion is, you know, you are overweight, you need to put your fork down type of things. down type of thing. but there's lots of different reasons why people are overweight. it could be medical, it could be tablets, it could be a whole load of things. thank you to dave for letting us watch how it is done. here is the balloon capsule. it's attached to a thin tube, swallowed into the stomach. an x—ray checks the position, then water is pumped into the balloon, and the tube is removed. it takes up a fair bit of space. it's this big,