Is the way to go, although I leave out the skip of sugar in my case. The ad used to claim 'So strong you'll grow a third bollock' which is what this study seems to contain, a lot of bollocks.
Tea, if you enjoy it, will benefit you to some degree or other but as to whether or not it will help to prolong your life will depend on so many other factors.
For example I find drinking tea while driving a large, fast motorcyle up (or down) a motorway can be potentially life limiting, while sitting at my PC with a pint porcelain mug of the aforementioned builder's beverage is only dangerous if I drop the boiling tea and heavy mug on my toe. Medical studies that are largely based on a single or narrow set of statistics are in real terms quite valueless, except to actuaries who may use the results to separate insured persons from larger amounts of premium .