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Does Caffeine Elevate Blood Pressure

Study Selection And Data Extraction

Does Caffeine cause High Blood Pressure? â

Two investigators independently selected the studies and extracted the data, and discrepancies were resolved by consensus. To examine the effect of coffee or caffeine consumption on change in BP, we selected controlled clinical trials, either randomized or nonrandomized, in which participants had an SBP 140 mm Hg and/or a DBP 90 mm Hg or who were identified as having mild or mild-to-moderate hypertension . Trials with a co-intervention on other lifestyles factors, such as smoking or physical activity, were excluded. As was done in a previous review , the studies were classified into 2 groups, according to whether duration of coffee or caffeine intake was < 1 wk or 1 wk .

To explore the association between habitual coffee consumption and risk of CVD in hypertensive individuals, we selected cohort studies in which the outcome variables were CVD incidence or mortality. Both cohort studies of hypertensive individuals and larger cohorts that presented results in a subgroup of hypertensive individuals were included.

Does Caffeine Influence Blood Pressure

Yes and no. As previously outlined, it can cause short-term increase shortly after consumption. However, there is no evidence to show chronic caffeine consumption has a long-lasting impact on blood pressure meaning if youve been drinking coffee every day for 10 years it will have made virtually no impact on your blood pressureunless, of course, youre adding sugar or other calorie-dense ingredients that can lead to weight gain. But from the standpoint of looking specifically at caffeine, it is neutral with regard to long-term blood pressure.

Not everybody has the same acute reactions to caffeine, however. Tolerance is completely unique and differs from person to person. One person may drink coffee every day and get a buzz after one cup, while another may need two or three to exhibit the same response.

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Should People With Hypertension Avoid Coffee

A 2017 review concluded that people with high blood pressure should exercise some caution when drinking coffee but do not need to avoid it.

The review found that although there were older reports of a link between coffee drinking and hypertension, more recent studies suggested that 34 cups a day had either a neutral or beneficial effect.

A of 40 healthy regular coffee drinkers found that all types of coffee increased blood pressure but that the levels stayed within healthy ranges.

The increase in blood pressure was temporary but still measurable after consumption.

Some research suggests that the amount of coffee that someone drinks determines its effects on blood pressure.

As coffee contains many different compounds aside from caffeine, other compounds could be responsible for its effects on blood pressure.

However, a person could try switching to decaffeinated coffee to see whether their blood pressure decreases.

Some people find drinking coffee causes insomnia, anxiety, or tremors. Others may notice reflux and heartburn. Anyone who experiences these symptoms due to coffee should avoid drinking it.

According to researchers , regular coffee drinkers may experience withdrawal symptoms, such as headaches and low mood, if they suddenly stop consuming it. Therefore, if they wish to reduce their consumption, they should cut down the number of cups gradually.

Some alternatives to coffee contain caffeine, while others are naturally caffeine-free. People can try:

  • chicory coffee

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Effects Of Caffeine On Your Health

With 80% of Americans drinking coffee every day, and even more getting it from various other sources, caffeine is not a major threat to your health or blood pressure, unless youre hypertensive. Of course, there are ways that coffee or caffeine can become dangerous for your heart. Avoid putting in sugars, creamers, and other calorie-rich substances, and try to keep your consumption to four cups a day or less. Your tolerance will determine how much caffeine you can handle, but typically four cups is a safe limit.

Caffeine is a natural stimulant and can change how you think and feel. It causes acute changes by stimulating your central nervous system, typically leading to improved focus, alertness, and awareness.

Much like any substance, natural or not, there are some unwanted side effects that can occur depending on dosage, tolerance, and timing. These include:

  • Jitters or shakes
  • Difficulty falling asleep or staying asleep
  • Increased heart rate

Drinks That Lower Your Blood Pressure

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If you struggle with hypertension, odds are youve looked high and low for a quick and easy way to reduce your blood pressure.

The truth is that theres no single solution, but making simple changes can yield powerful results. Something as easy as expanding and evolving your beverage intake can help to keep your blood pressure at a healthy level.

While lower blood pressure may not be just a sip away, simple changes to what you sip every day can lead to some big heart health benefits.

Here are a few options to get you started.

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Are There Any Long

Since coffee is a beverage that people drink on a daily basis and it does raise your blood pressure in the short term, the question of if there are any long-term effects of drinking coffee is a legitimate concern. The results are conflicting. Some evidence suggests that drinking coffee regularly does not have a long-term impact on your blood pressure, nor does it appear to increase your risk of cardiovascular health problems.

Other evidence suggests negative reactions to caffeine like caffeine withdrawal, rapid heartbeat, anxiety, or jitteriness. If youre considering drinking coffee every day, its important to do so in moderation, and figure out what works the best for you, your body and your lifestyle. One way to consume coffee in a healthy way is to never drink it on an empty stomach, before having your morning coffee, you should have at least a small meal. In case of gastrointestinal distress, an option is to add collagen protein into your coffee.

Relationship Between Coffee And Blood Pressure

Doctors often recommend not to consume Coffee before checking your blood pressure. It is regular advice which people have given to their fellow beings.

They think that drinking coffee would increase your blood pressure. But it is conflicting with the thoughts of the doctors opinions.

Doctors have analyzed deeply based on various researches conducted around Coffee and blood pressure.This debate is going on for the long term, and research that took place in 1987 by an Italian expert suggests that Coffee would decrease the blood pressure indirectly.

To have a deep understanding of this research, nearly 15 volunteers from the United States participated in an activity. Those 15 people were non-smokers, and they did not have any issues concerned with blood pressure. Amongst those 15, six of them were coffee lovers.

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Does Coffee Raise Blood Pressure

As a stimulant, coffee makes people more alert and awake. Over 154 million adults, or 75% of the US population, are reported to consume some form of it every day. Due to its popularity, there needs to be a better understanding of how it can impact your health. Experts agree that in moderation coffee is not unhealthy, but how does it affect your blood pressure?

How Can I Lower My Blood Pressure In Minutes

Does Coffee Raise Blood Pressure? Time To Clarify The Confusion

If your blood pressure is elevated and you want to see an immediate change, lie down and take deep breaths. This is how you lower your blood pressure within minutes, helping to slow your heart rate and decrease your blood pressure. When you feel stress, hormones are released that constrict your blood vessels.

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Some Reports Say Theres No Direct Link Between Caffeine And Blood Pressure

According to Mayo Clinic:

Caffeine can cause a short, but dramatic increase in your blood pressure, even if you dont have high blood pressure. Its unclear what causes this spike in blood pressure. Some researchers believe that caffeine could block a hormone that helps keep your arteries widened. Others think that caffeine causes your adrenal glands to release more adrenaline, which causes your blood pressure to increase.

Recent studies, however, have repeatedly reported that caffeine doesnt necessarily lead to an increased blood pressure, nor does it up the risk for cardiovascular diseases like high blood pressure, heart disease and cardiac arrest. also states a well-known study stating that theres no direct link between caffeine and a rise in blood pressure:

One very well-known study examined more than 85,000 women over a ten-year period and found that there was no increased risk of these diseases, even in women who drank more than six cups of coffee per day.

The Joint National Committee on Hypertension likewise reports that theres indeed no evidence that caffeine leads to high blood pressure.

And heres another silver lining:

Does Caffeine Increase Blood Pressure

Caffeine is a natural stimulant found in the nuts, berries, and leaves of certain plants. Caffeine is most commonly consumed as coffee or tea products, and some have estimated that these beverages may be the most widely consumed foods in the world.

Because caffeine is so common in all human cultures, a great deal of research has been done to discover the health effects of caffeine. Relationships between caffeine and heart disease, as well as the caffeine-blood pressure link, have been especially active fields of study.

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How Long Does Caffeine Affect Blood Pressure

Caffeine can cause a short, but dramatic increase in your blood pressure. There are some studies that found caffeine as blockage to hormones that keeps your arteries widened while others saw it as a cause for adrenaline increase causing blood pressure to increase.

Caffeine is a natural stimulant found in nuts, berries, cocoa and certain plants and is commonly consumed as coffee or other caffeinated beverages. It is the most common beverage that people around the world consumed. Researches link caffeine and heart disease to be a major factor affecting blood pressure that can even trigger cardiovascular conditions.

Caffeine Blood Pressure And The Heart

Should People With High Blood Pressure Consider Reducing ...

Evidence has repeatedly shown that consumption of caffeine does not increase the risk of high blood pressure, heart disease, or heart attack. One very well-known study examined more than 85,000 women over a ten-year period and found that there was no increased risk of these diseases, even in women who drank more than six cups of coffee per day. The Joint National Committee on Hypertension has specifically stated that there is no evidence linking coffee/tea and high blood pressure.

While some studies have shown a weak link between caffeine and elevations in blood pressure, the results are complicated and only consider short-term effects.

For example, one widely quoted study found that blood pressure rose slightly in subjects almost immediately after consuming a caffeinated beverage and that this blood pressure rise was more pronounced in people with pre-existing high blood pressure. However, these elevations were not very large and only lasted a short time. The study also showed that in about 15 percent of people with existing high blood pressure, drinking a caffeinated beverage actually caused a decrease in blood pressure.

Two important studies published in 2007 further supported the existing body of evidence by again demonstrating that:

  • Caffeine-induced blood pressure changes were small and short-lived
  • Caffeine does not contribute to disorders of the blood vessels associated with high blood pressure and cardiovascular disease

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How Do My Genetics Affect Caffeine And Blood Pressure

Genetics may account for up to 50% of differences in blood pressure . There is one gene specifically responsible for metabolizing caffeine called CYP1A2. Depending on your version of it, you are either good to go or youd better be careful.

The CYP1A2 rs762551 C variant is what is called the slow-metabolizing variant. If you are stuck with this, your body metabolizes caffeine slower than normal. Your risk of hypertension is higher if you consume caffeine .

If, on the other hand, you have one of the A variants, or what is known as the fast-metabolizing version, your risk of hypertension may actually be lower . Good news! Caffeine may actually protect you from hypertension!

Now, we wont say this justifies hitting up the coffee shop every morning in the name of good health, but at least you can strike that worry off the list.

Is There A Link Between Caffeine Consumption And Blood Pressure Measurement

Caffeine consumption and blood pressure are linked only if youre measuring blood pressure within two hours of having caffeine. Caffeine spikes blood pressure 30 to 120 minutes after intake , but this is the only time when a noticeable difference in blood pressure occurs. Caffeine has a half-life of three to six hours, so its possible to see a slight variation in blood pressure within this time period as well, but its unlikely to be pronounced.

Caffeine affects diastolic blood pressure by four to 13 points, and it can impact systolic blood pressure by three to 15 points. If youre going to have your blood pressure checked, avoid taking caffeine beforehand in order to get an accurate reading and prevent any unnecessary concerns or actions.

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Study Design Caffeine Dosing And Compliance

In a randomized, 2-week crossover design, subjects consumed a placebo during home maintenance for 6 days and also consumed a placebo on day 7 in the lab. The other week involved ingestion of caffeine during home maintenance for 6 days and a 7th day of caffeine lab challenge . The crossover conditions were counterbalanced. Home maintenance doses were supplied in bottles of identical gelatin capsules containing either lactose or lactose mixed with 80mg of U.S. Pharmacopeia caffeine . Subjects were instructed to eliminate all caffeine from their diet during the 2 weeks of the study. During home maintenance, subjects were instructed to take one capsule at 8:00 am, 1:00 pm, and 6:00 pm each day. Subjects were instructed to eliminate all caffeine from their diet during the 2 weeks of the study. Test day challenge doses were supplied in capsules containing either lactose or lactose mixed with 250mg of USP caffeine .

Demographic And Baseline Differences By Group

Nancy Dell: Caffeine and high blood pressure

presents the demographic, screening, and baseline data by group. Postmenopausal women had FSH values in the expected range. There were no significant group differences in habitual daily caffeine intake. All groups reported consuming caffeine equivalent to 3 to 4 cups of coffee/day in the diet. The sample was composed of a predominantly white population, and there were no significant differences in race across groups . There were no differences in age among the 3 groups of postmenopausal women. Young men had the highest BMI compared to premenopausal women . There was a statistically significant overall group difference in systolic blood pressure posthoc tests with corrections for multiple comparisons, adjusted for age, showed that premenopausal women had lower SBP compared to young men, with no significant differences among any of the other groups. On the other hand, older men had higher diastolic blood pressure than women in the premenopausal, ERT, and HRT groups. Young men also had higher DBP than women in the premenopausal and HRT groups. There were no significant group differences in HR.

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You Might Have A Family History Of High Blood Pressure

Lots of things can run in the family. Your mannerisms, facial expressions, and stunning good looks, for example, can all be passed down from your parents, their parents, et cetera. But did you know that some medical conditions, like high blood pressure, could also be a result of your genetics?

One 2018 scientific analysis published in Nature Genetics included more than 1 million people and ultimately found 535 new loci that point to traits associated with high blood pressure. Basically, researchers found hundreds of specific spots in DNA that affect blood pressure. However, the same researchers also assert that these genetic factors may influence lifestyle causes of high blood pressure, and vice versa, meaning that your diet and activity level do play a role.

Circulation published a 2017 study that also demonstrates this point. The study gave each participant a genetic risk score for high blood pressure based on their risk factor for cardiovascular disease and a lifestyle score based on their activity, diet, and habits, like smoking or drinking. Those with a healthier lifestyle score achieved better blood pressure results than those with a lower score, regardless of their blood pressure risk.

Some Reports Say Caffeine Has An Effect On Blood Pressure

It has become so accepted that caffeine raises blood pressure, that doctors advise avoiding caffeine before having your blood pressure checked because it may raise it enough to falsify test results.

But what is the evidence for caffeine raising blood pressure?

A 1987 Italian study actually found that caffeine lowers blood pressure. In this study, researchers from the United States and Switzerland studied 15 volunteers who didnt have high blood pressure and were nonsmokers. Only six habitually drank coffee. Harvard says:

The researchers monitored each volunteers blood pressure, heart rate, and sympathetic nervous system under four conditions: before and after drinking a triple espresso, before and after drinking a decaffeinated triple espresso, before and after receiving 250 mg of caffeine by intravenous injection, and before and after an intravenous placebo .

The result?

A triple espresso did raise blood pressure readings except in the habitual coffee drinkers. In those who didnt drink coffee, it raises systolic readings 13 mm Hg on average and diastolic by 7 mm Hg.

Harvard Medical School says:

But there was an anomaly. Harvard says there are hundreds of substances in coffee, and caffeine is usually the one named as raising blood pressure.

Their conclusions: Coffee raises blood pressure in people who dont drink it regularly. Younger people also are more sensitive to coffees blood-pressure effects.

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