But if you like your brew and you like it strong, you might want to consider a study released this month in the American Journal of Clinical Nutrition about the effect of unfiltered coffee on the heart. It might persuade you to reach instead for a glass of orange juice.
A steaming cup is a great comfort, but consider the effects of unfiltered coffee on the heart.
ARE YOU ONE OF THE MILLIONS OF PEOPLE WHO CAN'T START THE DAY without a steaming cup of coffee? If so, is your dependence on that morning caffeine jolt good or bad? It's hard to say. Decades of conflicting research about the potential benefits and harm of the popular bean have created so much confusion that most coffee drinkers have long since given up trying to sort it out.
Researchers from the Netherlands studied the effect of coffee consumption on blood levels of homocysteine, a naturally occurring substance that forms when the body breaks down protein. Elevated levels of homocysteine have long been associated with an increased risk of heart disease. Exactly how this amino acid harms the heart is unclear, ut our best guess is that it either makes the blood clot more frequently ot damages the lining of blood vessels in the heart. (Genetic defects and vitamin deficiencies have also been shown to cause an elevation in homocysteine.)
The Dutch researchers focused on strong, unfiltered coffee, and their results are not great news for folks who drink large quantities of caffeine. After just a unfiltered coffee a day, homecystein concentrations increased 10% in subjects who started out with normal levels. At the same time, cholesterol levels shot up 10% and triacyglycerols ( other fatty substances) 36%- both precursors to artery clogging atherosclerotic plaque.
The bottom line, according to the authors: drinking 1,360gram of unfiltered coffee a day may carry a 10% increase in risk for heart attack or stroke. An incidental but equally important finding was that levels of vi
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