There are many types of tea with many health benefits. However, the ones made purely of natural extracts such as chamomile and ginger have the greatest benefit. So what’s wrong with the other types of tea, the answer is caffeine. Black, white and even green tea all have caffeine content. Caffeine can cause a short drastic rise in your blood pressure. It is believed that caffeine causes the release of adrenaline that shoots up your blood pressure. If you have concerns or if you have discovered that caffeine affects your blood pressure, then you should limit it or avoid caffeinated beverages completely.