Some people can. I've been borderline hypertensive ever since my 20's so I don't have great genetics here. I'm on one medication for high BP. My doctor recommended I eat 1 oz of dark chocolate every day as well and that seems to have brought it down a few mm/hg lower than what the medication alone could. I don't think it will ever be safe for me to go off my BP medicine but dark chocolate may help me avoid having to take a 2nd medication.
Doctors generally try to control BP with lifestyle changes first and prescribe medication if the BP doesn't respond well enough to life style changes alone.
going to add to Irene K's wonderful answer...
First of all find why you have HBP in the first place...If you can narrow it down to why you have it then you can learn what you need to do to control it.
Might also be caused by stress too...worth checking it out as well.
They can help by finding certain techniques like all sorts of meditation or breathing to help relieve that stress that also might be causing it.
**If it is hereditary you will need pills to help out here there are no miracles.
good luck & I hope all works out for ya.
Eating less salt, consuming less proteing, possible weight loss and exercise.