There are more than 200 types of cancer that can affect the human body. It happens when cancer cells grow and divide uncontrollably. A British dentist shared some vital signs of oral cancer to look out for, according to Daily Express. Warning signs Persistent wounds or ulcers As with most of the symptoms on this list, having an ulcer doesn’t necessarily mean you have cancer, but when you notice it, you should get checked out. “While not every sore or ulcer in the mouth is indicative of cancer, it is important to have any persistent or unusual sores evaluated by a healthcare professional if the…