I think the investment in terms of cognitive stimulation, exercise, etc., is useful all the way through one's lifespan. One, there's a lot of evidence now showing that all the stuff we've been talking about—exercise, nutrition—actually prevents dementia. Two, once you have dementia, to be given cognitive stimulation will certainly slow down the dementia. In my clinical practice, we see a lot of people with dementia who are living alone, becoming withdrawn, becoming socially isolated, and we see their dementias accelerate. As soon as they move into a residence that has some cognitive-stimulating program, their cognitive scores and their function actually improve to a degree we don't see with medications. So the cognitive stimulation can actually outperform the medications in many instances.
So absolutely, it's a worthwhile investment.