Some of the health benefits of guyabano include fighting cancer, bacteria and diabetes. Guyabano has been used traditionally to treat skin astringent, muscle spasms, dysentery and to purge parasites, according to Medical Health Guide.
The guyabano plant has other health benefits, depending on which part of the plant is used. A concoction prepared from pulverized guyabano seeds treats inflammation, eczema and skin infections. Guyabano fruit and juice treat hematuria, urethritis and scurvy. The plant bark, roots and leaves are used to treat diabetes and act as a sedative. However, one should take caution when using guyabano as it increases the risk of atypical Parkinson's disease, notes Medical Health Guide.