 The healthiest beverages are probably water and tea, increasing tea consumption three cups a day, may decrease the risk of premature death from all causes by 24%. This applied to both green and black tea, though green may have a slight advantage. Part of this protection may be a lower risk of pneumonia. There have been five randomized controlled trials showing that those randomized to green tea are about a third less likely to come down with flu. For example, within just one hour of drinking a single cup of green tea, we can significantly cut down on the rate of DNA damage in ourselves because green tea significantly boosts the activity of DNA repair enzyme in our body that can fix DNA damage. And within a month, drinking two small daily cups of green tea can improve DNA resistance to free radical damage in the first place, indicating that green tea has significant genome protective effects or DNA protecting effects.