Kamikihi-to, a Kampo medicine, ameliorates impairment of spatial memory in rats.
That is, as the disease progresses in the brain, those who have a greater "reserve" do not show symptoms of Alzheimer's -- memory loss and impairment of day-to-day functions -- as quickly.
He or she can conduct tests to judge the degree of memory impairment and diagnose the cause.
But some studies, often funded by the companies involved, argue that the drugs should be more widely used--not only for people with mild to moderate Alzheimer's but also for those with the most severe form of the disease and patients who only have the first twinges of memory impairment.
Three had suffered from mild cognitive impairment - a more severe form of memory loss than that associated with ageing but less severe than Alzheimer's.
The imaging agent can't be used to diagnose someone with Alzheimer's disease if the individual doesn't experience memory impairment because the presence of amyloid in the brain doesn't alone suggest that someone has Alzheimer's.
Meanwhile, the Allon Therapeutics drug helped improve some measures of short-term memory in patients with mild cognitive impairment, a condition that often leads to Alzheimer's disease.
But a renegade group of doctors use it for a far broader range of ills--everything from heart disease to memory impairment--despite scant evidence it works and potentially dangerous side effects.
Also, a recent study found that the DHA component of fish oil from algae helped people with minor memory impairment, but this needs to be replicated in order to be more definitive, he said.
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Three of the five were already experiencing mild cognitive impairment as judged by standard memory tests.
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On memory tests, 27% of the football players showed impairment, compared with seven per cent of the swimmers and runners.
Research suggests some connection between low numbers of synapses in a person's brain and Alzheimer's symptoms such as memory impairment and language deterioration.
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