For the first time ever, researchers say they’ve established a link between a gene and stress-induced blood pressure changes in both animals and humans.

In an animal study, researchers in Germany generated mice lacking the gene phosducin and compared them with normal mice. They found that the mice without the gene developed high blood pressure under various conditions of stress.

In human studies done in the U.S. and Canada, scientists say phosducin DNA variants among subjects served as markers and made it possible to identify patients with an increased blood pressure response to stress-related activities.

"These studies provide us with unique insights into the mechanisms of blood pressure stress response and will provide a novel target for the treatment of this distinct form of high blood pressure," said study author Dr Ulrich Broeckel.

According to the Mayo Clinic, increased stress is also linked to other health issues like headaches, sleep problems, heart disease, stomach problems and decreased immunity.

Natural methods of reducing stress include exercise, relaxation and breathing exercises, tai chi, yoga and meditation.