Bacteria can be found in urine, even from healthy persons who are not infected. Drinking someone else's pee might expose you to a variety of illnesses. Urine, although containing antibodies, also includes microorganisms. Other people may have been exposed to these bacteria without knowing it, such as family members or coworkers. You can get sick if they happen to have one of the diseases you are at risk for. The most common disease transmitted through human urine is hepatitis A. The virus is present in approximately 1 out of 10 people's urine and is unlikely to cause illness. However, if another person consumes their drink and then touches objects such as tools or dishes that have been used by the contaminator, they could transmit the virus to themselves. Risk decreases over time because the virus is not present in all types of material so anything more than 24 hours old does not pose a risk. In addition to hepatitis A, there are several other infections for which urine has been reported as a transmission vehicle, including typhoid, tuberculosis, and HIV. These are usually serious infections that require medical attention. Although very rare, some people may develop allergies or other reactions to the proteins in urine. This could lead to an allergic reaction like rashes, asthma attacks, or nausea and should be treated by a physician.