Mortality rates due to nervous system disorders (eg, Alzheimer’s and Parkinsons’s diseases) and mental illness (eg, dementia, schizophrenia) were not different from the general population.

That's really a shame. Living longer is great, but dying from a slow, degenerative disease is extremely hard on people and their families. It's almost better to just drop dead from a sudden heart attack five years sooner, if you had to pick one or the other.