Uranium is about the same toxicity as lead (chemically very similar.) If you read up on Homer Laughlin China the Uranium Ceramic glaze is not a radiological hazard, it is a chemical hazard primarily, One item to consider though is any radioactive material inside the body is not necessarily a good thing, sensitive tissues can get irradiated and the potential for cancer does exist. If you ever get a cardiac stress test or other radiological diagnostic test you would be surprised how hot (radioactive) you are on a temporary basis, until the substance evacuates your body.
