August 18, 2017 CNN.com WOMAN SUFFERS FATAL HYPERAMMONEMIA FROM UNDIAGNOSED OTC DEFICIENCY AFTER INGESTING HIGH-PROTEIN FOODS AND PROTEIN SUPPLEMENTS FOR BODYBUILDING: Symptoms of urea cycle disorder went unrecognized as young mother, Meegan Hefford, prepared for a bodybuilding competition. Undiagnosed urea cycle disorders can be triggered by high-protein diets, resulting in excessive ammonia levels in the bloodstream. Her death triggers a world-wide controversy over the risks of high-protein supplements.