Does decaf green tea have the same health benefits as regular green tea?

Mostly : The health benefits of green tea primarily come from its antioxidant compounds which are mostly polyphenols. See http://www.Umm.Edu/altmed/articles/green-tea-000255.Htm however, there also are some health benefits from caffeine itself, so decaf may have a bit less benefit than regular. But many people are sensitive to caffeine. See http://www.Bryanmarcel.Com/health-benefits-caffeine-coffee-tea#.