Encephalitis can be a debilitating condition, but many people have never even heard of it. A new global report looks at how we can improve diagnosis and treatment.

Also on the program, new research seems to indicate that antidepressents might speed cognitive decline in dementia patients, but do they really? We take a closer look at some of the caveats. And a gene therapy for toddlers who have gone blind is showing some promise, we’ll look into what this could mean for future treatments.

Presenter: Claudia Hammond Producer: Katie Tomsett and Margaret Sessa-Hawkins