If you’re anything like me, coffee is one of those little pleasures that really make life brighter. A recent report should ease any worries you might have about its effects on your heart, assuming you’re keeping it moderate.
Experts from the American Heart Association have released a new scientific statement regarding the relationship between coffee, caffeine intake, and cardiovascular health. They found that consuming up to 400 milligrams of caffeine per day—about five eight-ounce cups of coffee—is generally safe for your heart and might even reduce the risk of cardiovascular issues for some individuals. However, they cautioned that higher caffeine levels, particularly from energy drinks, could be risky.
“For most people who enjoy caffeinated coffee or tea, they can be reassured that these drinks likely don’t raise cardiovascular risks and may even provide health benefits,” said Gregory Marcus, the lead author of the statement and a professor at the University of California, San Francisco, in an email to Gizmodo.
How much coffee is actually safe daily?
Caffeine is one of the most widely used substances globally, and coffee is the main way many people consume it. While there have been concerns regarding regular coffee consumption, most recent research is optimistic. For instance, a study from February suggested that drinking caffeinated coffee and tea might lower the risk of developing dementia later in life.
However, according to the AHA, the relationship between caffeine and heart health can be quite nuanced. Researchers examined various studies focusing on how caffeine might influence the risk of stroke, coronary artery disease, and arrhythmias (irregular heartbeats). The consistent takeaway was clear: for the average person, consuming less than 400 milligrams of caffeine is generally safe.
“Regular moderate coffee consumption can fit within a healthy lifestyle,” the authors stated in a paper published on Monday in the journal Circulation.
There are some details in the data worth exploring further. For one, having one to three cups of coffee daily could potentially raise blood pressure in those with normal levels, while more than that might actually lower it. Additionally, a specific compound in unfiltered coffee, called cafestol, has been linked to higher levels of low-density lipoprotein (LDL) cholesterol—the less favorable kind. Some of the positive connections noted between coffee and conditions like type 2 diabetes might be influenced by other substances aside from caffeine.
“While studies have their limitations and can sometimes be confounded by other variables, the evidence shows that coffee can help reduce risks related to type 2 diabetes, atrial fibrillation, heart attacks, and strokes,” Marcus noted. “That said, caffeinated products could also lead to more frequent premature ventricular contractions (PVCs), which may increase the risk of heart failure.”
What are the real risks of caffeine?
That being said, the primary dangers of caffeine likely arise when you exceed the 400 milligram mark. Higher caffeine intake is associated with elevated risks of high blood pressure and irregular heart rhythms, the authors point out.
While it might be challenging to reach such high caffeine levels with your average coffee, it’s much easier with energy drinks. Consuming excessive amounts from these sources can be quite hazardous. For example, between 2022 and 2023, there were at least two heart-related deaths in the U.S. linked to Panera Bread’s potent “Charged Lemonade” energy drinks, which were later pulled from the market. Even incredibly fit individuals who consume energy drinks could face serious issues like strokes.
“Energy drinks haven’t been studied as extensively as caffeine from natural sources like coffee or tea, but the evidence suggests they may be more harmful overall,” Marcus explained.
So, yes, it’s wise to keep an eye on your daily caffeine intake, especially if you’re downing energy shots regularly. If you’re concerned about how caffeine affects your sleep or other health aspects, consider cutting back a bit. Given that most Americans probably consume less than 200 milligrams of caffeine a day, it seems the average reader should feel pretty comfortable with their current consumption.
