Parsley is rich in many vital vitamins, including Vitamin C, B 12, K and A as wefolate and iron. This means parsley keeps your immune system strong, tones your bones and heals the nervous system, too. It helps flush out excess fluid from the body, thus supporting kidney function. Regular use of parsley can help control your blood pressure. The health benefits of parsley include controlling cancer, diabetes, and rheumatoid arthritis, along with helping prevent osteoporosis. Furthermore, it acts as a pain reliever with anti-inflammatory properties. Parsley also provides relief from gastrointestinal issues such as indigestion, stomach cramps, bloating, and nausea, while helping to strengthen the immune system.