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Alcohol dilates peripheral blood vessels, but has been known to actually. constrict some blood vessels in the brain, lowering the oxygen content. Alcohol dilates peripheral blood vessels, but has been known to actually  constrict some blood vessels in the brain, lowering the oxygen content.
how to know if you have an enlarged heart. Do not take high blood pressure lightly because it can enlarge the heart. Viral infections and drinking too much alcohol can make the walls of the heart thicker. In some cases, dilatation can take place which is the increase of the size or length of the heart s chambers.