Healthy Gains from Drinking Teas There are numerous health benefits of tea. You can drink it hot or cold, but you should know that it can cause many side effects, especially if you're sensitive to caffeine. A study in the European Journal of Preventive Cardiology examined over 100,000 individual adults in China. People who frequently drank tea had a lower risk of cardiovascular problems or a premature death as compared to nondrinkers. The results were similar for black and green tea. The causes and mechanisms behind tea's health benefits are unclear, but studies suggest that it can prevent heart disease, stroke, and neurological problems. Though the connection between tea and heart health is more solid for non-black tea, more research is needed to prove the association between different types of tea. Besides, it's important to note that tea can cause jitters if you drink too much caffeinated varieties. Whether or not a tea can reduce the risk of heart disease or stroke