Some studies suggest that drinking tea can help reduce the risk of cardiovascular diseases. For example, one study found that people who drink tea regularly have a slower decline in the levels of “good cholesterol” in their blood, while the levels of “bad cholesterol” do not change significantly. This helps reduce the risk of myocardial infarction and stroke.
Tea polyphenols have antioxidant and anti-inflammatory effects, which can reduce blood viscosity, lower blood lipid levels, improve vascular elasticity, and prevent microvascular rupture, thereby benefiting heart and vascular health.
While drinking tea is beneficial for cardiovascular health, moderation is important. It is recommended to drink at least 3-4 cups of tea a day, but avoid drinking too much at once and adding too much sugar and milk, as this can affect the efficacy of tea polyphenols.
For example, strong tea contains more caffeine and theophylline, which may cause palpitations and insomnia. Overly hot tea can irritate the throat, esophagus, and stomach, increasing the risk of cancer. Moldy tea leaves may contain harmful mold.
However, they should pay attention to the type of tea and the timing of tea drinking to avoid affecting sleep or blood pressure. For example, green tea and Pu-erh tea may help lower blood lipids and reduce thrombosis, but strong tea should be avoided in the evening to avoid affecting sleep.
Green tea is rich in tea polyphenols and is especially beneficial for women's cardiovascular health. Oolong tea is more beneficial for men's cardiovascular health, as it can reduce arteriosclerosis and thrombosis formation.