I've had high blood pressure since 24. I've had every possible diagnostic test, tried medication (no avail). I'm not overweight and do walk about 50 minutes a day, eat as healthy as can be expected. And still it averages around 170/90. I gave up on it. If global disaster doesn't kill me first, it'll probably be a heart attack around 50. There are worse ways to go. Seriously, even lifestyle changes for the relatively healthy only seem to make a 10 mmHg difference, so eh. Whatever.