- By Bornika Das
- Wed, 14 May 2025 08:09 PM (IST)
- Source:JND
Caffeine On Hypertension: Caffeine is a widely consumed stimulant found in coffee, tea, energy drinks, chocolates, and even some medications. While it offers a quick boost in alertness and energy, its effects on the cardiovascular system, especially blood pressure, are a growing concern for many individuals. As more people turn to caffeinated products to stay productive in their busy lives, it becomes crucial to understand how this common substance can influence blood pressure levels, particularly in those already diagnosed with hypertension or borderline high blood pressure.
Despite years of research, the relationship between caffeine and hypertension remains complex. While some studies say that caffeine may cause short-term spikes in blood pressure and argue that regular consumption leads to tolerance and minimal long-term impact. In conversation with Jagran English, Dr Amlan Tapan Mohapatra-Associate Consultant Neurology, Manipal Hospital Bhubaneshwar, shares insights on how caffeine how caffeine affects blood pressure and its tolerance in individuals.
Caffeine and Its Effect on Blood Pressure
Caffeine is a human nervous system stimulant and people consume it to boost alertness. Caffeine is naturally found most commonly in tea leaves and coffee seeds or beans. Dr Amlan Tapan Mohapatra states, “people drink caffeine to prevent drowsiness and remain alert and improve mental functioning.” Apart from tea and coffee, caffeine is now being commercially available in soft drinks, energy drinks, chocolates, ice creams and others. Caffeine consumption is legal in almost all parts of world, however remains largely unregulated.
How Caffeine Affects Blood Pressure
Dr Mohapatra explains that its relationship with high blood pressure or hypertension has long been debated. He says, “Caffeine causes a rise in blood pressure by blocking a chemical substance in our body called adenosine, which is responsible for dilating blood vessels and maintaining normal blood pressure.” “It causes an acute increase in blood pressure however, chronic caffeine drinking causes a rise in blood pressure that is not enough understood,” he adds.
For most healthy individuals, moderate caffeine intake that is 400 mg per day (approximately four 250 ML cups of coffee) is generally considered safe and not likely to cause chronic hypertension. But it may be harmful to a person with high blood pressure because with every cup of coffee, blood pressure rises and can lead to consequences of hypertension.
How Caffeine Affects Hypertension (Image Credits: Canva)
Caffeine Tolerance and Individual Differences
Research suggests that caffeine increases blood pressure by 5 to 10 percent within 30 minutes and remains elevated for three hours. Dr Mohapatra mentions, “These short-term spikes of blood pressure, though temporary, can be a significant concern in patients having high blood pressure.” Interesting to note that regular caffeine use develops tolerance to the blood pressure-raising effects. In these cases, the body becomes less sensitive to the impact of caffeine and blood pressure remains more or less stable. This depends on genetic factors, lifestyle and the overall health of an individual.
Dr Mohapatra advises, “For those with hypertension or borderline hypertension, it is essential to consume a moderate amount of caffeine. It is advisable to avoid caffeinated beverages before stressful events or physical exertion, which can cause a rapid rise in blood pressure.” Measuring blood pressure before and after caffeine conception remains crucial here and patient need to understand these personal sensitivities.
Caffeine and hypertension can coexist safely for many people, but the important thing is the amount of caffeine taken. By substituting with low caffeine alternatives like green tea or decaffeinated beverages, people can enjoy their drink and at the same time reduce the harmful risk. Consulting with a doctor and being mindful of individual responses to caffeine can help strike a healthy balance. By understanding how the body reacts, people can thus enjoy coffee without affecting our health.