Excessive Caffeine Consumption Can Lead to High Blood Pressure and Frequent Trips to the Toilet, Experts Warn
Millions of people around the world rely on a cup of coffee in the morning to kickstart their day. However, consuming too much caffeine can have negative effects on the body, including increased heart rate, anxiety, and high blood pressure. Dietitians have broken down exactly what happens to the body when one consumes too much coffee.
Caffeine, found in tea, coffee, and energy drinks, can deliver a boost in mood, energy, and performance. However, it can also cause anxiety, increased heart rate, and higher blood pressure. Drinking more than four cups of coffee per day can cause blood pressure to soar. Caffeine blocks adenosine receptors, which are responsible for feelings of sleepiness, resulting in a spike in blood pressure within half an hour of consumption.
Dr. Duane Mellor, a researcher at Aston University, explains that the impact of caffeine on blood pressure can reduce over time with habitual consumption. However, consuming more than 600mg of coffee per day can lead to anxiety, sleeplessness, and palpitations. It is important to note that pregnant women should not consume more than 200mg of caffeine per day, as it can lead to low birthweight.
While tea, coffee, and colas are generally safe to consume as part of a balanced diet, it is important to be mindful of the amount of caffeine ingested. One mug of instant coffee contains approximately 100mg of caffeine, while energy drinks can contain 80mg in a small 250ml can. The NHS advises that anything over 600mg of coffee per day is too much and suggests sticking to around four to five cups.
In addition to high blood pressure, excessive caffeine consumption can also lead to frequent trips to the toilet. This is because caffeine stimulates blood flow to the kidneys, causing them to produce urine more quickly. While this effect is usually seen among those increasing their caffeine intake, rather than those who consume a steady amount, it is important to stay hydrated to avoid headaches.
Furthermore, drinking too much coffee can lead to an upset stomach. Coffee and tea consumption have been linked to irritable bowel syndrome symptoms, acid reflux, abdominal pain, and loose stools. While the evidence that caffeine itself is the cause is limited, caffeine can increase stomach acid production, causing reflux and heartburn. It can also have a stimulant effect on the digestive system, leading to an upset stomach.
Another side effect of excessive caffeine consumption is anxiety. Caffeine is a stimulant that can leave people feeling jittery, restless, and with an increased heart rate. Consuming more than four cups of coffee per day can result in feelings of nervousness and anxiety due to the raised heart rate and increased brain activity. The disruption of sleep caused by caffeine can also contribute to anxious feelings.
While the benefits of quitting coffee may include better sleep, lower blood pressure, whiter teeth, and less anxiety, there are also potential health benefits to moderate coffee consumption. Research has shown that coffee consumption can help reduce the risk of certain diseases, such as Alzheimer’s, Parkinson’s, and certain cancers.
It is important to note that moderate caffeine intake should not be detrimental to heart health. The British Heart Foundation advises a consumption of around four to five cups of tea or coffee per day. However, it is crucial to avoid added sugars, syrups, cream, or large milky coffees, as they can add up in terms of calories, sugar, and saturated fat.
In conclusion, while a cup of coffee can provide a much-needed boost, it is essential to consume caffeine in moderation to avoid negative effects such as high blood pressure, frequent bathroom trips, upset stomach, and anxiety. Always consult with a healthcare professional for individual advice on caffeine consumption.