Increase in blood pressure and intraocular pressure over time is associated with narrower and more twisted small blood vessels in the retina. Researchers assessed 2089 individuals from a Danish ...

When your thermoreceptors pick up on ... the blood vessels to become more open. This leads to an increase in blood flow through your blood vessels as well as a decrease in blood pressure.

This includes high blood pressure and headache pain. In some cases, too much blood vessel narrowing may be a side effect of drugs and foods, such as caffeine and salt. Read on to learn about the ...