Drinking Tea Reduces Non-CV Mortality
Drinking tea reduces non-cardiovascular mortality by 24% according to a study of 131,000 people presented at European Society for Cardiology Congress in Barcelna on August 31st 2014 by Professor Nicolas Danchin from France.
A release from the society quotes Professor Danchin as saying, “If you have to choose between tea or coffee it’s probably better to drink tea. Coffee and tea are important components of our way of life. Their effects on cardiovascular (CV) health have been investigated in the past with sometimes divergent results. We investigated the effects of coffee and tea on CV mortality and non-CV mortality in a large French population at low risk of cardiovascular diseases.”
The release explains that the study included people aged 18 to 95 years who had a health check up at the Paris IPC Preventive Medicine Center between January 2001 and December 2008. During a mean 3.5 years follow up, there were 95 deaths from CV and 632 deaths from non-CV causes. Coffee or tea consumption was assessed by a self-administered questionnaire as one of three classes: none, 1 to 4, or more than 4 cups per day.
The researchers found that coffee drinkers had a higher CV risk profile than non-drinkers, particularly for smoking. The percentage of current smokers was 17% for non-coffee drinkers compared with 31% in those who drank 1 to 4 cups per day and 57% in those who drank more than 4 cups per day.
Non-coffee drinkers were more physically active, with 45% having a good level of physical activity compared to 41% of the heavy coffee drinkers. “This is highly significant in our large population,” Professor Danchin said.
Heavy drinkers of coffee were older than the non-drinkers, with a mean age of 44 compared to 40 years. The differences in blood pressure were small, with heavy coffee drinkers having a slightly lower systolic blood pressure (SBP) and higher diastolic blood pressure (DBP) compared to non-drinkers when adjusted for age.
Tea drinkers had the reverse profile of coffee drinkers, with consumers having a better CV risk profile than non-consumers. One-third (34%) of the non-drinkers of tea were current smokers compared to 24% of those who drank 1-4 cups per day and 29% of those who drank more than 4 cups. Physical activity increased with the number of cups of tea per day from 43% in the moderate tea drinkers to 46% in the heavy drinkers.
Tea had a more marked effect on blood pressure than coffee, with a 4-5 mmHg decrease in SBP and 3 mmHg decrease in DBP in the heavy tea drinkers, compared to non-drinkers, when adjusted for age.
“Overall we tend to have a higher risk profile for coffee drinkers and a lower risk profile for tea drinkers,” Professor Danchin said. “We also found big differences with gender. Men tend to drink coffee much more than women, while women tend to drink more tea than men.”