My colleagues, who specialise in geriatric medicine, are deeply committed. Indeed, as more and more people survive into old age, authorities are (at last!) beginning to take their problems seriously. Why? If for no better reason than they can vote. And, as we have already seen, mental decline, whether attributed to age or a specific dementia, such as Alzheimer's disease, is not confined to old age - far from it. Alzheimers, other types of dementia, and cognitive decline, are all seen in younger age groups - they're just commoner in old age. Moreover, as I have suggested earlier, the roots of Alzheimer's disease, and other forms of cognitive decline, begin a lot earlier than when the condition becomes obvious.
What does that mean?
Well, in my view it means that we should do our utmost to help ourselves before ever we develop symptoms.
Omega-3s appear to confer no benefit to somebody who has already developed Alzheimer's disease but they do appear to reduce the risk of developing the disease.