Drink more red wine!
Said in jest perhaps, but wine provides the same protective factors as the "grape powder" with none of the sugar. The downside is that you need to consume limited quantities, less than two glasses per day. Above this, the alcohol begins to have damaging effects that take away from the benefits.
This study is novel because it centers on grapes rather than wine, saying that the extra sugars can be subtracted from the diet and when they are not a factor, the grapes are incredibly beneficial.
This is old news but in our society, much of what is known has to be rediscovered to be "valid."