A new study finds that anyone with blood pressure that's higher than what's considered normal may be more likely to have a stroke.
Researchers looked at 19 previous studies involving more 760,000 people. They found those with pre-high blood pressure were 66 percent more likely to have a stroke than people with normal pressure.
Blood pressure of 120-over-80 is considered normal. Between that and 139-over-89 is considered prehypertension. High blood pressure is 140-over-90 and above.
It's estimated 31 percent of adults in the U.S. have high blood pressure and another 30 percent have pre-hypertension.
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