Coffee and Tea Together May Lower Stroke and Dementia Risk, Study Says

Drinking coffee and tea together may reduce the risk of stroke and dementia, according to a new study from Tianjin Medical University. Researchers analyzed long-term health and lifestyle data from tens of thousands of participants. Those who consumed both drinks regularly showed a lower incidence of these conditions than those who drank only coffee or only tea. The study also estimated an optimal daily intake range for the combined habit. The team published its findings in a peer-reviewed journal.

The researchers point to compounds in both drinks that may support blood vessel health and reduce inflammation. But they caution that the results are observational and do not establish causation. Factors such as diet, exercise, and smoking could also play a role. The study did not include clinical trials, so the exact mechanism remains unclear. Even so, the findings add to a growing body of work on the health effects of coffee and tea.

Drinking coffee and tea not only refreshes the mind but may also protect our brains. A new study from Tianjin Medical University, published in PLOS Medicine and based on long-term tracking data of more than 360,000 people in the UK Biobank, is the first to reveal the association between coffee and tea intake and the risk of stroke and dementia. The study found that moderate daily consumption of coffee or tea, or a combination of both, can minimize the probability of stroke and dementia. However, excessive coffee consumption may instead increase the risk of dementia. So how much is best to drink each day? And how do coffee and tea exert their protective effects? This article will provide a detailed interpretation of the key findings of this study.

According to reports from multiple media outlets, a latest study has concluded that moderate consumption of coffee and tea can reduce the probability of stroke and dementia. Numerous previous studies have already confirmed that drinking coffee and tea has positive effects on health. A study published by Tianjin Medical University in PLOS Medicine likewise verified the benefits of coffee and tea for the body—reducing the risk of stroke and dementia—and further determined that the optimal daily intake of coffee and tea is 4 to 6 cups.

It is reported that the study was based on data from 365,682 participants in the UK Biobank, aged between 50 and 74, of whom 45.7% were male. Participants joined the study between 2006 and 2010, and researchers conducted follow-up analysis on them until 2020.

Researchers collected data through questionnaires, interviews, health records, physical measurements, and blood sample collection. During the study period, a total of 5,079 participants were diagnosed with dementia, and 10,053 had strokes.

The study also found that the relationship between coffee and tea intake and the risk of stroke and dementia is nonlinear. Therefore, although drinking coffee and tea helps prevent stroke and dementia, causality cannot be inferred from this.

The researchers' analysis pointed out: people who drink 2 to 3 cups of coffee or 3 to 5 cups of tea per day, or who combine coffee and tea for a total of 4 to 6 cups, have the lowest incidence of stroke or dementia. Compared with those who drink no coffee or tea at all, people who drink 2 to 3 cups of coffee or 3 to 5 cups of tea per day had a 32% lower risk of stroke and a 28% lower risk of dementia.

The relationship between coffee and tea intake and stroke, dementia, and post-stroke dementia

In addition, the study showed that drinking both coffee and tea is associated with a reduced risk of ischemic stroke and vascular dementia.

When tea is consumed together with coffee, it is associated with a reduced risk of post-stroke dementia, meaning that drinking 3 to 6 cups of coffee and tea per day carries the lowest risk of post-stroke dementia.

However, the researchers also stated that this is the first time the population that drinks both beverages simultaneously has been described. This study only involves a small part of an individual's diet, so this interaction may also occur by chance. At present, whether simultaneous intake of coffee and tea can reduce the risk of stroke and dementia still awaits further verification.

Both coffee and tea contain large amounts of caffeine and are the most widely consumed psychoactive substances. Therefore, some industry insiders have pointed out that coffee and tea may become part of a healthy lifestyle.

The study also showed that coffee and tea can reduce the risk of cardiometabolic diseases, including type 2 diabetes, hypertension, and cardiovascular diseases.

In the past, a large number of studies have confirmed that coffee is good for health.

For example: #Drinking coffee helps protect the liver; #Drinking coffee can reduce obesity-related fatty liver; #People who drink coffee have a lower risk of chronic liver disease; #Drinking coffee can reduce cardiovascular disease and coronary heart disease; #Drinking coffee can reduce the risk of death, and so on.

However, although drinking coffee is beneficial, it is also important to pay attention to moderation, because excessive coffee consumption can reduce brain volume and increase the risk of dementia. In July of this year, an Australian team's study pointed out that people who drink more than 6 cups of coffee per day have a 53% increased risk of dementia.

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The above content is compiled by CoffeeHunters, a coffee news website.