A study done at Trondheim University Hospital in Norway and reported in 2008 in the journal “Neurology” found there was no connection between high blood pressure and headaches, and actually suggested that people with hypertension might have less headaches than others because of the condition. The study looked at the health data of over 50,000 Norwegians. (Only ordinary headaches, and not migraines, were looked at.) One big factor affecting headaches was found to be systolic pressure, or the higher number on the blood pressure reading. Headaches in patients with high systolic pressure took place more rarely. Even more telling was a correlation between the “pulse pressure,” which shows the difference between systolic and diastolic pressure as the heart beats. The rate of headaches in those with high pulse pressure was reduced by as much as half. When hypertensive patients in the study had medicine that treated the condition, headaches became more frequent. One possible reason is that hypertension sufferers usually get stiffer arterial walls, lowering headache pain.