The polyphenols in tea have been known to:

Help protect cells from the normal, but damaging, physiological process known as “oxidative stress.” Although oxygen is vital to life, it’s also incorporated into reactive substances called free radicals. These can damage the cells in our body and have been implicated in the slow chain reaction of damage leading to heart disease and cancer.
Help prevent blood clotting
Help lower cholesterol levels
Help neutralize enzymes that aid in the growth of tumors
Help deactivate cancer promoters
Help stimulate the immune system
Tea also has fluoride for strong teeth, virtually no calories, and half the amount of caffeine found in an equally-sized cup of coffee. Whether decaffeinated tea has the same level of polyphenols, and thus the same health benefits, as regular tea has not yet been studied. Caffeine is a natural component of tea leaves. It is not yet known if removing caffeine also removes polyphenols.

If you aren’t sure you like drinking tea yet. Try it in this fun drink.

Fruit Tea Punch

2 bags Green tea
1 1/2 cups water
1 cup honey
1 cup orange juice
1/2 cup fresh lemon juice
1 cup fresh fruit, crushed
1 pint ginger ale
Method:

Make tea as per instructions on the tea bags. Allow it to cool. Mix all ingredients except ginger ale. Just before serving add ginger ale and crushed ice. If the punch is too strong for your taste you can dilute with ice water or more ginger ale.