1887

Intake of caffeine and other methylxanthines during pregnancy and risk for adverse effects in pregnant women and their foetuses

image of Intake of caffeine and other methylxanthines during pregnancy and risk for adverse effects in pregnant women and their foetuses

The first part of the report deals with occurrence of methylxanthines in foods, beverages, and medicines, and estimates of caffeine intake. In addition, a short review of the pharmacological and toxicological actions of caffeine is given. The second and main part of the report reviews available information from epidemiological studies on the potential health hazards to the human foetus associated with parental intake during pregnancy of caffeine and related methylxanthines in foods, beverages and medicines. The studied adverse effects are influence on fertility, spontaneous abortion, congenital malformation, pre-term delivery, foetal growth retardation, foetal behaviour and effects on neonates, infants and young children. The conclusion of the report demonstrates the need for limiting caffeine exposure during pregnancy. The Nordic Working Group on Food Toxicology and Risk Evaluation (NNT) recognizes that the human exposure to caffeine and related compounds causes a spectrum of pharmacological effects, for instance cardiovascular, renal, neurological and behavioural effects. The increasing use of caffeine and related methylxanthines in various foods and beverages consumed by children and adolescents cause concern. NNT recommends that a full hazard characterization of caffeine and related methylxanthines should be performed with the aim to reach a conclusion about the upper safe level of intake of these compounds.

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Caffeine intake and congenital malformations

The question as to whether high caffeine intake by mothers-to-be can cause malformations in the human foetus has been discussed and investigated in a number of reports. Concern about the possible harmful effects of caffeine or caffeine-containing beverages and foods in pregnancy have evolved mainly from results of animal studies. However, it is unclear to what extent findings in experimental animals can be extrapolated to man. Differences in the mode of caffeine exposure and the way the compound is metabolised are particularly hard to interpret.

English

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