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Supplements such as fish oils and the memory-boosting herb gingko biloba do not prevent cognitive decline, according to new research.
But simple mental exercises, such as brain-training games, might help.
A review of clinical studies has found no evidence that herbal supplements, vitamins and even vitamins prevent cognitive decline in healthy older adults.
However the review, conducted by St Michael’s Hospital in Toronto, Canada, did find evidence that enjoying a challenging crossword or sudoku may be of benefit.
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