Colbert ended his show late last year for a move to David Lettermanâs job at CBS. Other correspondents whose roles on the show shot them to stardom include actor Steve Carell and comedian John Oliver, who just started the second season of his HBO show Last Week Tonight.
3. Blood Disorders. Blood disorders such as hemophilia and leukemia can cause unexplained bruising, often because your blood fails to clot properly. If you have severe and frequent unexplained bruising, it's a good idea to see a physician to rule out such disorders, especially if it seemed to come on suddenly.
Injuries cause bruising, but spontaneous bruising can also occur if you have a medical condition, such as hemophilia, or if you take medications that interfere with the blood's ability to clot, such as warfarin. Although a lack of vitamins C or K could cause bruising, vitamin deficiencies are not often a cause. Some alternative-health websites claim that vitamin E might help bruises heal more quickly, although it's better known for potentiating the action of blood thinners, which can increase bleeding. Unexplained bruising requires medical evaluation.