Black tea, as one of the world's popular beverages, seems to play a significant role in reducing the risk of vascular diseases. According to new studies conducted by researchers from the Chinese Academy of Medical Sciences, regular tea drinking can significantly improve cardiovascular health.
Monitoring the Health of Nearly Half a Million People
This research was conducted over nearly 9 years on the health status of nearly half a million individuals aged 30 to 79. During this time, researchers not only monitored the health of the participants but also examined their tea-drinking habits. These habits included the number of cups consumed per day, preferred tea temperature, type of tea, and even its concentration.
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Throughout this period, researchers investigated the number of individuals suffering from vascular diseases such as cardiovascular diseases, cerebrovascular diseases, and peripheral artery diseases. The results showed that those who regularly drink tea are at a lower risk of developing these diseases.
The Impact of Tea Type and Number of Cups
By examining the data more closely, researchers found even more interesting results. The type of tea consumed was very important in reducing the risk of vascular diseases. Black tea significantly reduces the risk of these diseases compared to green tea. Researchers attributed this difference to the compounds resulting from oxidation in black tea, including "theaflavins," which have anti-inflammatory and lipid-regulating properties.
In addition to the type of tea, the number of cups consumed per day was also considered an influential factor. The results indicated that consuming 6 to 8 cups of tea per day is the optimal amount for reducing the risk of vascular diseases. However, as consumption increases above 8 cups, the risk begins to rise again.
Interestingly, drinking about 20 cups of tea a day has a similar effect to not drinking tea at all and even increases the risk of vascular diseases. Researchers attribute this to caffeine, which can put pressure on the circulatory system and negate all the health benefits of tea.
Tea Temperature and Potential Risks
Another interesting point is that the temperature of the tea can also be influential in this regard. Individuals who consume their tea at room temperature or hot observed a reduction in the risk of vascular diseases. However, those who chose very hot and scalding tea faced an increased risk of esophageal cancer by up to 16 percent.
Although researchers do not yet fully understand how drinking hot tea can lead to increased vascular disease, there is evidence suggesting that consuming hot beverages raises the risk of esophageal cancer. These findings have significant implications in medical research, and researchers emphasize the need for further studies in this area.
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