Squirrels could hold secret to preventing brain damage for stroke patients

Squirrels could hold the key to helping stroke patients avoid brain damage, scientists believe. Researchers in the US have discovered that when squirrels hibernate a protective process occurs in their cells which allows their brain to function with reduced blood flow and oxygen. When they awaken the animals suffer no ill-effects despite being deprived of essential nutrients.   During an ischemic stroke the blood supply, containing sugar and oxygen, is cut off to the brain, causing cells to