With one in three families affected by dementia, this is something which is becoming a crisis. Around a million people will have dementia in the next few years. One of the big challenges we have is this big quest to get a cure or a treatment to halt dementia or Alzheimer's in their tracks.
We've had some setbacks this year, and some high-profile failures. But Lilly as a company has actually had some big successes, and so what I've learned today is that it's not all gloom and doom.
More top news
A man from London who was the subject of cruel online taunts has had the last laugh when a group of celebrities threw a party for him in LA.
The Sydney gunman who took 18 people hostage in central Sydney last year was a self-obsessed fantasist, an inquest has heard.
An extremley rare bird may become extinct in Syria because of the fall of Palmyra to militants, experts have warned.