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How Is Coffee Linked To Heart Disease? Coffee is one of the most popular beverage around the world. People have coffee during breakfast, coffee break, dinner or at meeting. About 2.25 billion cups of coffee are consumed worldwide each day. Because of caffeine, coffee was generally considered as bad for the health in the past. Too much coffee (caffeine), say more than 400 mg a day, can cause one experience symptoms like restlessness and shakiness, insomnia, headaches, dehydration and anxiety. Meanwhile, some earlier studies also linked drinking coffee to increase in blood pressure, cholesterol levels, and even higher risk of heart attack and cardiac arrhythmias. For instance, a study that was published in the July/August 2002 issue of the journal ‘Psychosomatic Medicine’ reported that 4 cups of coffee consumed in the morning could raise the blood pressure by an average of 4 mm for systolic pressure and 3 mm for diastolic and lasted throughout the day and into the evening. The hike in the blood pressure, though appear modest, could be linked to a higher risk of heart disease. Recent research has, however, suggested that coffee probably does not increase the likelihood of heart disease and in some cases, it may even be good for the heart. Two recent studies published in journal ‘Annals of Internal Medicine’ on July 11, 2017 revealed positive effect of drinking coffee. In one study conducted by researchers from University of Hawai'i Cancer Center, Honolulu, Hawaii and other institutions reported that coffee drinkers had a reduced risk of death from heart disease, stroke, cancer, respiratory disease, diabetes and kidney disease. They examined and analyzed the coffee consumption patterns among 185,855 white and non-white participants, recruited in the early 1990s and followed up for an average of over 16 years. The results derived indicated that drinking 1 cup of coffee a day was linked to a 12 percent lower risk of death at any age, from any cause while those drinking 2 or 3 cups a day had an 18 percent lower risk, irrespective of ethnicity.
The other study involved 521,330 participants recruited between 1992 and 2000 across 10 European countries. They were followed for over 16 years on average. After accounting for various factors including age, smoking status, physical activity and education, researchers found that those who drank 3 or more cups a day were found to have an 18 percent lower risk of death for men, and an 8 percent lower risk of death for women at any age, compared with those who did not drink coffee. The benefits held regardless of the country, although coffee drinking was not linked to a lower risk of death for all types of cancer. One of the latest good news about coffee was presented in November 2017’s American Heart Association’s Scientific Sessions in Anaheim, California. Researchers from the University of Colorado medical school analyzed data from the Framingham Heart Study, which has tracked the eating patterns and cardiovascular health of more than 15,000 people since the 1940s. They found that every extra 8-ounce cup of coffee consumed per day reduced risk of heart failure, stroke and coronary heart disease by 8 percent, 7 percent and 5 percent, respectively, up to at least 6 cups per day. Almost all of the coffee drinkers in the study (97 percent) consumed between 1 and 6 cups of coffee a day. The findings were not published in a peer-reviewed medical journal at time of presentation. While health experts warn that drinking coffee cannot be recommended as being good for the health based on these kinds of studies, most of the findings do suggest that for many people, no long-term harm will result from drinking coffee.
Nevertheless, for some individuals, coffee intake
could trigger an increase in palpitations. Drinking coffee (caffeine) could also
be problematic for people who already have poor heart rate variability or whose
hearts are compromised by disease or a previous heart attack. This is because
caffeine stimulates the sympathetic nervous system, causing blood pressure to
rise, adrenaline to be released, and instantly requires that the heart beat
harder and faster. These people should avoid coffee or keep the number of cups
to the minimum.
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