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Stockholm, Feb 19 (IANS) Caffeine, the primary constituent of coffee has been found to be associated with low birth weight babies and may also prolong pregnancy, says a Swedish study. A research team from the Norwegian Institute for Public Health, investigated the impact of maternal caffeine during pregnancy on babies, relying on information about mother's diet and birth details collected over 10 years. After excluding women with medical and pregnancy-related conditions, nearly 60,000 pregnancies were included in the study. All sources of caffeine were monitored in the study: coffee, tea, fizzy drinks, as well as food including cocoa-containing cakes and deserts and chocolate, the journal BMC Medicine reports. The World Health Organisation currently suggests a limit of 300mg per day during pregnancy but some countries recommend a limit of 200mg, which can be less than a single cup of coffee from some high street cafes. Verena Sengpiel, from Sahlgrenska University Hospital, Sweden, who led the project said: "Caffeine consumption is strongly correlated with smoking which is known to increase the risk for both pre-term delivery and the baby being small for gestational age at birth (SGA)." However, "we found no association between either total caffeine or coffee caffeine and pre-term delivery but we did find an association between caffeine and SGA," added Sengpiel, according to a Sahlgrenska statement. In fact, they found that caffeine from all sources reduced birth weight. Caffeine from all sources extended pregnancy by five hours per 100 mg caffeine per day, but caffeine intake from coffee was tied to an even longer gestational length, eight hour extra for every 100 mg caffeine per day.
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