I don't know that this means you should stop eating black pepper, but I do think you shouldn't eat it in large quantities or all the time. I generally don't let waiters grind their pepper mills over my food at restaurants until I taste it first. For a hot spice, I prefer cayenne , or red pepper. Red pepper comes from a different plant, doesn't have any natural carcinogenic activity and has a long history of medicinal use. It lowers cholesterol and stimulates circulation.
Cayenne is helpful against sore throats and mouth sores.
You can put a pinch on your food or mix a little with lemon juice and a teaspoon of honey. Or gargle with one-quarter teaspoon salt in a cup of warm water, with red pepper added to taste. While too much red pepper can cause stomach irritation, moderate amounts may protect against ulcers and some cancer-causing chemicals. Creams containing capsaicin are very helpful against the pain of shingles and arthritis . Stay away from red pepper if you are prone to bladder problems or hemorrhoids, or are sensitive to dietary irritants.