Dr Mark Porter explores Dementia Challenge - the Department of Health's much publicised campaign to improve dementia care, including a new scheme to test everyone over 75 who's admitted to hospital for signs of the condition. Will this lead to overdiagnosis or will it get people treated early?

And prescribing sleeping tablets for those unable to rest on a noisy hospital ward may seem like a quick fix but there is strong evidence that they are linked to side effects including an increase in falls. Mark Porter investigates and finds some simple solutions to getting a good night's kip in hospital.

Plus a leading expert on the thyroid gland answers a listener's concerns about the use of the hormone thyroxine.