A stroke, or an attack of the brain, happens when a blood vessel in the brain bursts or becomes blocked. The brain is an organ that cannot store oxygen, so blood vessels deliver oxygen through the blood. A lack of blood supply can cause a stroke, therefore causing surrounding nerve cells to be cut off from nutrients and oxygen. If the brain tissue lacks oxygen for more than three or four minutes, the tissue begins to die.
Signs and symptoms of thyroid problems: what you need to know
It's something so common, yet so many people are unaware of whether or not they have it: thyroid disease. According to the American Thyroid Organization, more than 12% of the U.S. population will develop some form of thyroid disorder during their lifetime. What's more? Around 60% of those who have it may be completely unaware of their chronic condition.