Painful L (W name: metabolic arthritis), also known as “hyperuricemia”, is a disease caused by purine (a g “pring”) substitution barrier, so that uric acid accumulation, eider moth P inflammation of a N, also Q substitution P inflammation. Severe kidney stones and even kidney failure can be involved. The reason why gout is known as a modern health killer is because as people’s living standards improve, big fish, meat, seafood and beer have become the main meals. And these foods are the main causative factors of the disease. In particular, animal offal, seafood and beer are all purine-rich foods, and when the intake of purine exceeds the body’s metabolic tolerance. The metabolite, uric acid, will accumulate in some parts of the body, resulting in the above disease.