what causes increase in ammonia levels?

Increased ammonia levels in the body can result from liver dysfunction, such as cirrhosis or hepatitis, which impairs the liver's ability to convert ammonia into urea for excretion. Other causes include kidney failure, where the kidneys cannot adequately filter waste products, and certain gastrointestinal conditions that promote the production of ammonia by bacteria. Additionally, excessive protein intake or certain medications can also contribute to elevated ammonia levels.