A randomized trial of intensive versus standard blood-pressure control - The New England Journal of Medicine - 2015

Brief Summary:

In patients at high risk for CVD but who do not have a history of stroke or diabetes, intensive BP control (target SBP <120 mm Hg) improved CV outcomes and overall survival compared to standard therapy (target SBP 135-139 mm Hg), while modestly increasing the risk of some serious adverse events.

Reference: http://www.ncbi.nlm.nih.gov/pubmed/26551272