Gout is a painful swelling and redness of one or more joints. Uric acid in the blood, when at elevated levels, crystallizes in a joint, usually in the big toe, causing severe pain. Uric acid levels are elevated when ingesting too much purine, which is found in red meats, legumes, beer, and vegetables such as asparagus and spinach. The ingestion of such foods accounts for only 1/3 of the triggers of the gout, how the body treats purines accounts for the remaining 2/3.  Treatment is avoidance or minimal intake of foods high in purine,[Citation Needed] and anti-inflammatory drugs such as ibuprofen.