The research from the University of Gothenburg's Sahlgrenska Academy studied 40,825 patients treated for high blood pressure in primary care.
They found that women and men are prescribed different medication to bring down their blood pressure.
Women are also less likely than men to hit the general treatment target of blood pressure below 140/90 mm Hg, which is the threshold for high blood pressure.
The study found that women are more often prescribed diuretic medication while men are given ACE inhibitors (which block an enzyme in the kidneys).
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"But our study shows that women are less likely to be given this treatment," Ljungman said.
The research also found that the differences in treatment between women and men are greater in patients with limited education.
The fact that women are less likely to reach the target blood pressure is partly because they are generally older when diagnosed with high blood pressure.
"But this shouldn't make a difference, as previous studies have shown that older patients with high blood pressure also benefit considerably from treatment to lower their blood pressure, not least to prevent the development of disorders such as stroke, dementia and heart failure," said Ljungman.
Ljungman believes that this could be one of the reasons why the healthcare system underestimates the risk of future cardiovascular disease in women.
"The key thing when treating high blood pressure is to reach target blood pressure. The fact that women do so less often than men is remarkable, and steps must be taken to improve treatment," Ljungman said.