Benefits of Watermelon | vedicarehealth Watermelon is a juicy fruit full of moisture to provide for the body. Let's dive into it to know about its health benefits for men. Watermelon has L-citrulline, which is an amino acid and it is present in watermelon. It gets converted to L-arginine in the body during this process. Nitric oxide relaxes and expands blood vessels which helps in treating erectile dysfunction. Watermelon has many antioxidants, including lycopene and beta-carotene, and these help in many health issues such as swelling, maintaining hormonal balance, and functioning of the blood vessels. That helps in treating erectile dysfunction. Watermelon is full of vitamins which helps in various health problems, especially for erectile dysfunction.