For years, scientists have been trying to answer these questions, since coffee is such a favorite beverage around the world.

While some studies warn that drinking coffee can increase a person's risk of cardiovascular events, others suggest that it can help maintain heart health and blood vessel function.

Some research has suggested that regularly drinking a lot of coffee contributes to aortic stiffness — this is when the aorta, which is the largest blood vessel in the human body, becomes less and less flexible. Aortic stiffness can contribute to the risk of cardiovascular disease.

At the same time, other evidence has indicated that drinking more than three cups of coffee a day can protect against atherosclerosis, a condition in which plaque builds up inside the arteries, preventing blood from flowing normally.

Now, a new study conducted by researchers from the Queen Mary University of London in the United Kingdom has found that even people who drink a significant amount of coffee each day do not experience arterial stiffness, meaning that coffee does not increase their risk of cardiovascular problems in this way.

Lead author Prof. Steffen Petersen and colleagues presented the study's findings yesterday at the annual British Cardiovascular Society (BCS) Conference in Manchester, U.K.

The British Heart Foundation, a registered charity based in the U.K. that supports research about heart and circulatory conditions, funded the study.

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