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Coffee Before Sleep Puts Your Heart at Risk


But coffee is so good…

Studies show that drinking coffee before bedtime can have negative effects on sleep quality and heart health. This means you’re putting yourself at risk of heart disease and ultimately of receiving chest compressions. One of our missions is to create awareness about all of the things that can put your heart in harm’s way. While we do create awesome Mixed Reality applications to train first responders, you still don’t want to be the one receiving the CPR. Unfortunately, this leads us to informing you about how it’s best to avoid caffeine before you go to sleep (we get it, we love it too!). 


As we all know, coffee is a popular drink worldwide with about 90% of the adult world population consuming it daily. It’s used as a morning pick-me-up, as an afternoon energy boost, or even in skincare products. However, many people don’t know that it can also have adverse effects on the heart when consumed before bedtime. 


We will explore the effects of drinking caffeinated coffee before bedtime on the human heart, discuss how this habit affects sleep quality and how it increases the risk of developing cardiovascular disease. Finally, we have some tips for those who want to continue drinking their coffee in the evening but still want to maintain good health. 


The caffeine in coffee is a drug which can have a number of effects on the human body. The effects of drinking caffeinated coffee before bedtime on the human heart are not fully understood, but there are some indications that it may be harmful. Caffeine has been shown to increase both systolic and diastolic blood pressure in humans. This increases the risk of heart disease over time. 


The cardiovascular system is responsible for pumping blood around the body and regulating blood pressure. It does this by contracting and relaxing to maintain an even flow of blood. When caffeine enters the bloodstream, it stimulates these muscles to contract more quickly and more often than they would naturally, increasing your heart rate and blood pressure. Increased levels of caffeine can also cause irregular heart rhythms or make existing arrhythmias worse. These changes in the cardiovascular system could lead to serious health problems like chest pain, stroke or heart attack if left untreated. 


Monkey asleep on a branchWhat to do?

There are many people who drink coffee before bedtime to stay awake, but what they don’t know is that caffeine can disrupt their circadian rhythm. This will lead to a lack of sleep or an inadequate quality of sleep which will have detrimental effects on the human heart. The caffeine in their system  can also cause palpitations or irregular heartbeat which can be fatal if it goes untreated for too long. 


The effects of drinking caffeinated coffee before bedtime on the human heart are complex. We should consider that some people may be more susceptible to caffeine’s effects than others depending on their age, genetics, habits and other factors. The negative effects of caffeine are not limited to just the heart though, as caffeine has been linked with increased risk for diabetes and other diseases. 


The American Heart Association recommends that adults limit their caffeine intake to 400 milligrams per day, which is about 2-3 cups of coffee. Now, if one of those cups happens to be before bed, then we recommend you do this an hour before sleep and to follow with a glass of water. While this does not guarantee that your heart will not be affected by the caffeine, it provides some time for your body to flush it out of your system.  We dedicate ourselves to prepare emergency responders, but you don’t want to be the one receiving CPR. Remember to keep your heart health first! 


Study sources:

Caffeine Effects on Sleep Taken 0, 3, or 6 Hours before Going to Bed

Coffee, caffeine, and sleep: A systematic review of epidemiological studies and randomized controlled trials.