Uric acid is a waste product in the body that is formed when the body breaks down purines, which are found in some foods. The normal range of uric acid levels in the blood is typically 2.5–7.0 milligrams per deciliter (mg/dL) in males and 1.5–6.0 mg/dL in females. High uric acid levels are considered to be over 7 mg/dL for men and over 6 mg/dL for women. High uric acid levels can cause gout, kidney disease, and other health issues. Low uric acid levels are rare, but they can be associated with serious neurologic disorders, including Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis (ALS), reduced kidney function, and a painful nerve condition called trigeminal neuralgia.