Tea and Caffeine Content
Green Tea contains a moderate amount of caffeine unless it is decaffeinated. An average cup (6 oz.) of green tea contains about 30 milligrams of caffeine. This compares to a cup of black tea which has about 40 milligrams and a cup of brewed coffee which has 100 milligrams. Caffeine content is also affected by the length of the infusion in water. Black tea infused for 5 minutes yields 40-100 milligrams, whereas a 3-minute
Herbal tea such as chamomile tea is really not tea in the traditional sense and has no caffeine in it.
The best anti-aging liquid to drink is filtered water. Moderate tea consumption if you are in good health and have no caffeine sensitivity or diseases such as cardiac arrhythmias that can be triggered by caffeine, tea consumption is acceptable.