Four cups of coffee 'not bad for health' suggests review

Conclusion It appears that previous recommendations from the 2003 Health Canada review into the effects of caffeine on health remain suitable. Health Canada recommended a maximum daily coffee intake of 400mg/day for healthy adults and 300mg/day for pregnant women. Although this review looked at a large number of studies and found that the evidence overall supports these recommendations, there are some limitations to the research: The number of studies providing evidence for each health outcome varied. Some results were based on a large number of studies, others on a much smaller number. This means the strength of evidence for different health outcomes varied. Most evidence comes from observational studies. This means we can't be sure that other health and lifestyle factors aren't influencing the findings. Even if randomised controlled trials were possible, it is often difficult to make sure people stick to a given caffeine level and are assessed for long enough to measure adverse outcomes.  The methods and quality of the individual studies will have varied. Studies will have differed in the way they measured caffeine intake or how they assessed health outcomes. This could have made the findings of individual studies inconsistent and difficult to directly compare. We don't know that observations on measures such as blood pressure, anxiety and sleep would necessarily have led to negative overall health outcomes. People may not accurately recall how much caffe...
Source: NHS News Feed - Category: Consumer Health News Tags: Food/diet Pregnancy/child Source Type: news