Silymarin in milk thistle helps maintain liver health and protects the liver from toxins such as alcohol, according to LiverSupport.com. Medical research has suggested that silymarin also helps improve type 2 diabetes, according to WebMD.
Although further research is necessary, patients suffering from cirrhosis of the liver have seen improvement after oral administration of milk thistle, states WebMD. Studies have shown that use of milk thistle combined with traditional treatment can decrease blood sugar levels and improve cholesterol levels in patients with type 2 diabetes, says WebMD. Lowered cholesterol levels in type 2 diabetes patients can also decrease the patients' risks of heart disease.