A stroke occurs when a blood clot blocks or ruptures a blood vessel in the brain, cutting off oxygen and nutrients to brain cells. There are three main types of stroke: transient ischemic attacks (TIAs), ischemic strokes, and hemorrhagic strokes. TIAs cause temporary blockages while ischemic and hemorrhagic strokes cause permanent damage. It is important to recognize the signs of stroke using the FAST method and seek immediate medical help. Making lifestyle changes such as exercising regularly, eating healthy, reducing stress, quitting smoking, and limiting alcohol can help prevent stroke.