A recent study has found that victims of high blood pressure, who habitually slept less than six hours at night carry a two-fold risk of suffering a resistant case of hypertension,

"There are a number of studies demonstrating a relationship between hypertension risk and insomnia and short sleep duration, but no one correlated poor sleep quality with hypertension severity [before]," said study author Rosa Maria Bruno, a doctoral student and research fellow at the Institute of Clinical Physiology-National Council of Research in Pisa.
Hypertension increases the risk of cardiovascular events; therefore this is an area which must be addressed.
Source-Medindia