A new study suggests high doses of B vitamins may halve the rate of brain shrinkage in older people experiencing some of the warning signs of Alzheimer's disease.

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Health officials seeking the source of a Legionnaires' outbreak which has been linked to the death of a 64-year-old woman are focusing on industrial premises

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More needs to be done to establish which are safe and effective ways to relieve morning sickness, experts say.

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