> I'm almost sure the part about being mentally active to delay dementia is true. This is marketing at work. There's been a huge PR campaign over the past ~10

> I'm almost sure the part about being mentally active to delay dementia is true. This is marketing at work. There's been a huge PR campaign over the past ~10 years to convince people that "brain fitness" is an actual thing, including the idea that it is specifically useful for preventing dementia, but the science isn't really there.