The Progressive Era. During the period known as the Progressive Era (1890s to about 1920) the U.S. government became increasingly activist in both domestic and foreign policy.
One possible link between brain freeze and other headaches is local changes in brain blood flow. If further research confirms all these types of headaches are caused by blood flow changes, new drugs that block widening of the blood vessels - called vasodilation - could improve treatment for sufferers.
Confidence votes 613. No. Brain freeze is a headache most commonly associated with the quick consumption of cold substances, such as ice cream. When the cold substance comes into contact with your palate or the roof of your mouth and sinus cavities it causes the blood vessels to vasoconstrict or get smaller.ot immediately. Helium has many negative effects on the brain. Bubbles of helium can travel to the arteries that lead to your brain. Inhaling the gas won't kill brain cells o â¦ n its own, but sucking it in can cause oxygen deprivation, which can lead to your precious brain cells slowly dying.