How stress may increase risk of heart disease and stroke

Heightened activity in the amygdala -- a region of the brain involved in stress -- is associated with a greater risk of heart disease and stroke, according to a study published in The Lancet that provides new insights into the possible mechanism by which stress can lead to cardiovascular disease in humans

unicellular means one cell, and multicellular is multiple cells. just look at the prefixes and suffixes and the answer will be obviously apparent

if you do this and still don't know the answer, then learn the definition of a multicellular organism.