BMJ 2011; 342 doi: http://dx.doi.org/10.1136/bmj.d1432 (Published 09 March 2011) Cite this as: BMJ 2011;342:d1432

Habitual tea drinking has long been associated with health benefits, but the data don’t seem to uphold all of them. Eighteen studies included in a meta-analysis looked at the effects of two types of tea: black (fermented) and green (unfermented). Taking the risk of coronary heart disease as the outcome, black tea offered no benefit, whereas green tea did, but only at the highest levels of consumption (American Journal of Clinical Nutrition 2011;93:506-15, doi:10.3945/ajcn.110.005363).

Prenatal exposure to some epilepsy drugs may be associated with reduced intellectual abilities, and a study in Neurology looked specifically at the language skills of school aged children whose mothers took these drugs during pregnancy (2011;76:719-26, doi:10.1212/WNL.0b013e31820d62c7). The findings were that …

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