An app developed by the Swedish government to curb drinking among university students actually led to them drink more, while a globally popular fitness app made almost no difference to the weight of those who used it, a review of the effectiveness of health apps has found.Researchers from Bond University in Queensland decided to examine which health and wellness apps, of the quarter of a million available, had been proven to actually work, in the hope that they could provide doctors with a list of evidence-based apps to suggest to patients.

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