NDMA is considered a potential cancer-causing agent and is classified by the FDA as a carcinogenic contaminant, which means that it may increase the risk of cancer. NDMA may cause an increased risk for numerous cancers, including a higher risk for bladder cancer, liver cancer, and the development of tumors on the kidneys, lungs and liver. NDMA exposure can also increase the risk for serious symptoms such as enlarged liver, reduced kidney function, reduced lung function, reduced liver function, as well as jaundice, vomiting, cramps, fever, dizziness and nausea.Because NDMAs may increase the risk for cancer, the FDA has strict regulations regarding how much NDMA medications or anything intended for human consumption can contain.