There are approximately 24,000 coffee shops across the nation and more than 50% of Americans over the age of 18 - more than 150 million people - drink coffee daily, according to a report issued in 2017 by E-Imports, a coffee industry consultant.
The findings, likely, won't have much of an impact on most of us in the United States - the average American drinks 1.6 cups a day (compared to eight in Finland, the coffee capital of the world, according to the International Coffee Organization).
If you feel like you can't live without your daily cup of coffee, new research suggests your habit could actually help increase your lifespan.
The study, based on UK Biobank data of 347,077 participants aged between 37 and 73 years old, was a bid to understand if some of us are more resilient to coffee's effects than others. They explain that research shows that excess coffee can harm the heart by raising blood pressure. The World Health Organization calls cardiovascular disease the leading cause of death as well as one of the most preventable causes of death.
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Speaking to The Sunday Times, Astrid Nehlig, a research director at France's National Institute of Health, said: "It is hard to calculate, but my feeling is that drinking coffee possibly adds another couple of years to your life".
From these figures, researchers discovered that those who drank a moderate amount of coffee - between two and four cups a day - saw all-round reduced mortality rates, regardless of their weight, alcohol consumption, whether or not they smoked, and the caffeine content of their coffee. People with this gene could metabolize coffee faster than others.
She then suggested that people can maintain a healthy heart and a healthy blood pressure if they limit their coffee to fewer than six cups a day. However, another group of scientists find that six or more cups of coffee could lead to higher risk of cardiovascular disease. "Knowing the limits of what's good for you and what's not is imperative", says Hyppönen. Another team of researchers focused on finding out how much coffee will be consumed for the health conditions to outweigh the benefits.
"As with many things, it's all about moderation; overindulge and your health will pay for it".
"We also know that risk of cardiovascular disease increases with high blood pressure, a known effect of excess caffeine consumption", she said.