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Irregular sleeping patterns could
affect our health. So says a
in The European Journal of Nutrition. The study suggests sleeping at different
could increase the
of harmful
of bacteria in our stomach. Changing the times we sleep on workdays and at weekends changes our
body clock. Researchers call this "social jet lag". It leads to eating more
snacks, less fruit and vegetables, and a poorer
. The lead
of the study said social jet lag can encourage
that are bad for our health.