Drinking 2 or more cups of coffee daily may double risk of heart death in people with severe hypertension

• Drinking two or more cups of coffee a day was associated with twice the risk of death from cardiovascular disease among people with severe hypertension compared to non-coffee drinkers, in a study of more than 18,600 men and women in Japan.
• Drinking only one cup of coffee a day was not associated with increased risk of death from cardiovascular disease at any blood pressure level.
• In contrast, drinking green tea was not associated with increased risk of death related to cardiovascular disease at any blood pressure level, although both coffee and tea contain caffeine.