Introduction:For a long time, many people have chosen decaffeinated coffee due to concerns about the health effects of caffeine. However, the latest research shows that moderate consumption of caffeinated coffee may actually help reduce the risk of heart disease and arrhythmias, and freshly ground coffee performs even better in preventing cognitive decline. This article will analyze the real health impacts of different types of coffee using authoritative research data and provide practical selection advice to help you make smarter coffee-drinking decisions.
It is well known that caffeine is often seen as the main culprit behind coffee’s unhealthiness, leading many to switch to decaf. However, the latest research points out,that moderate daily intake of caffeinated coffee can lower the risk of heart disease and arrhythmias,while decaffeinated coffee does not show the same effect in this regard. In addition, the study also found that in preventing vascular dementia and Alzheimer's disease,freshly ground coffee offers better protective effects than instant coffee, and instant coffee is better than decaffeinated coffee..
Coffee itself is rich in over 100 bioactive compounds that may offer potential health benefits, while what might actually burden the body are often the added sugars and creamers. Next, we will delve deeper into the relationship between coffee and health to help you make healthier choices.
Many people believe that drinking coffee is unhealthy mainly because caffeine stimulates the central nervous system, exciting the sympathetic nerves and causing reactions such as increased heart rate and palpitations. As a result, many follow the advice of family or friends and switch to decaffeinated coffee to reduce these discomforts. However, decaffeinated coffee is not completely caffeine-free, and it may still cause physical discomfort in caffeine-sensitive individuals.
At the 71st Annual Scientific Session of the American College of Cardiology, Dr. Peter M Kistler, an expert in arrhythmia research, pointed out,that drinking 2 to 3 cups of caffeinated coffee per day can reduce the risk of heart disease and arrhythmias.The study data came from the large UK Biobank prospective database, analyzing participants including 382,500 adults without cardiovascular disease (average age 57) and 34,279 adults with existing cardiovascular disease. The results showed that among participants without cardiovascular disease, those who drank 2 to 3 cups of coffee per day had the lowest future risk of developing heart disease, stroke, or death from vascular disease; and among those with cardiovascular disease, drinking 2 to 3 cups of coffee per day could also lower the risk of death without increasing arrhythmia issues such as atrial fibrillation.
In addition to examining the impact of caffeine on the heart alone, another study published in the 2021 journal PLOS Medicine pointed out,that combining coffee and tea consumption can further reduce the risks of stroke and dementia.The research team tracked 365,682 participants aged 50 to 74 from the UK Biobank from 2006 to 2020, analyzing their dietary habits and health status.
During the 11.4-year follow-up period, 5,079 people developed dementia and 10,053 experienced a stroke. Researchers used the COX proportional hazards model, adjusting for variables such as weight, exercise, alcohol consumption, smoking, dietary patterns, and sugary drink intake, and found thatparticipants who consumed 2 to 3 cups of coffee or tea per day had a 32% lower risk of stroke and a 28% lower risk of dementia(when consuming only one of the two). If both coffee and tea were consumed together—such as 0.5 to 1 cup of coffee and 2 to 3 cups of tea per day—the risk of post-stroke dementia was reduced by 50%; if more than 4 cups of tea were consumed, the dementia risk was reduced by 30%.
Further analysis showed that participants who drank both coffee and teahad an 11% lower risk of ischemic stroke and an 18% lower risk of vascular dementia (excluding Alzheimer's-related dementia).Among different types of coffee,freshly ground coffee performed best in preventing vascular dementia and Alzheimer’s disease:compared to instant coffee, freshly ground coffee reduced the risk by 18% and 23% respectively; compared to decaffeinated coffee, the reductions were 26% and 33%. Instant coffee also outperformed decaffeinated coffee, reducing risks by 16% and 19% respectively.
Combining findings on cardiovascular and cognitive health,both caffeinated freshly ground coffee and instant coffee, when consumed in moderation, can effectively reduce the risks of arrhythmias, heart disease, stroke, and heart failure.Decaffeinated coffee may reduce some cardiovascular disease risks but has limited preventive effects on arrhythmias.
It is particularly important to note that the above studies all focused on ‘pure coffee without added sugar or creamer.’ Coffee itself contains abundant bioactive compounds that help reduce oxidative stress and chronic inflammation in the body. The perception that coffee is unhealthy often stems from added high-sugar, high-fat creamers or excessive cream, which are the real culprits behind increased obesity and cardiovascular disease risks.
In summary, if you are not sensitive to caffeine, moderate consumption of freshly ground coffee not only allows you to enjoy its rich flavor but also provides potential health benefits.When choosing coffee, prioritize freshly ground coffee, followed by instant coffee, while decaffeinated coffee is relatively less effective in preventing specific diseases.If you are caffeine-sensitive, it is recommended to avoid all caffeinated beverages and opt for caffeine-free teas instead, which can also provide antioxidant and anti-inflammatory benefits.
The above content is compiled by CoffeeHunters, a coffee news website.
