Posted by: Hourglass PJ18 JUL 2012
The influence of coffee drinking on health often makes headlines.
Recent research suggests that five or more cups a day can reduce the chance of success in in vitro fertilisation. Another study suggests that heavy consumption causes heart failure but two cups a day can prevent heart failure. This story was based on a systematic review of five studies, but heart failure outcomes, the types and amounts of coffee and subjects’ heart health at the start of the included studies were not clearly defined, making it difficult to reach conclusions.
Another recent study, among more than 400,000 adults, found that coffee consumption was inversely associated with total mortality and deaths due to heart disease, stroke, infections, injuries and accidents. But whether these findings are causal is not known.
Although this large study may provide some reassurance to coffee drinkers, none of these studies should be used to recommend consumption of large amounts of coffee.