Impact on heart health « Euro Weekly News

New research out of India is raising questions about the long-term effects of caffeine on heart health.

For many, caffeine is a daily necessity — the kickstart to a morning routine or a mid-day pick-me-up. But drinking more than 400 mg of caffeine a day, roughly equivalent to four cups of coffee, could silently impact your heart, researchers warn.

Chronic caffeine consumption: The silent threat to heart health

A study led by Zydus Medical College in Gujarat has linked habitual caffeine use to changes in the autonomic nervous system, which manages heart rate and blood pressure. Over time, this disruption could lead to elevated blood pressure and faster heart rates, even in healthy individuals.

“Our findings suggest that consistent high caffeine intake may interfere with the body’s natural mechanisms for controlling blood pressure and heart rate,” explains lead researcher Dr. Nency Kagathara.

The research examined 92 healthy participants aged 18 to 45, comparing the effects of caffeine on their cardiovascular systems during a three-minute step test. Blood pressure and heart rates were measured one and five minutes post-exercise.

Key findings include:

Nearly 20% of participants consumed more than 400 mg of caffeine daily from beverages such as coffee, tea, soft drinks, and energy drinks.

Those consuming over 600 mg a day experienced significantly higher heart rates and blood pressure even after resting.

Higher caffeine intake was most common among women in urban settings working in high-pressure jobs.

Caffeine and heart health: Myths vs. facts

Caffeine’s role in heart health is a hotly debated topic among researchers. While this study highlights its potential to elevate blood pressure, past research has painted a more nuanced picture:

Risks for certain groups: Previous studies found that caffeine may double the risk of cardiovascular death in people with severe hypertension, but the same risk wasn’t observed in individuals with normal blood pressure.

Possible benefits: Some studies suggest moderate coffee consumption could lower the risk of heart disease, dementia, and even certain neurodegenerative conditions like Parkinson’s.

This mixed evidence underscores the importance of personalising dietary recommendations. What works for one person may not suit another, especially when pre-existing health conditions come into play.

The global battle against hypertension

Hypertension is a silent killer, affecting over 1.28 billion people worldwide, according to the World Health Organization. Many individuals remain undiagnosed or untreated, particularly in lower-income countries.

While caffeine isn’t the sole contributor, it’s one of many factors that can elevate blood pressure. Other lifestyle choices, such as a high-sodium diet, alcohol consumption, and lack of exercise, also play a role.

Experts recommend adopting heart-healthy habits, such as:

• Reducing caffeine intake to moderate levels.
• Increasing physical activity.
• Opting for a balanced, low-salt diet.
• Regular blood pressure monitoring.

Caffeine isn’t inherently harmful, but excessive consumption may present risks, especially for those with undiagnosed heart conditions. Dr. Kagathara concludes, “Raising awareness about the potential cardiovascular effects of regular caffeine consumption is critical. Simple changes in daily habits can go a long way in promoting better heart health.”

So, while your morning cup of coffee may not need to go, it’s worth rethinking just how many you drink.