Oranges and many other citrus fruits are recommended for not only our immune health, but also the function of our kidneys. The antioxidants and stimulating compounds found within oranges can increase the detoxification processes in the body and ensure that our urinary tracts are clean and infection-free. The high levels of vitamin C also stimulate the production of more white blood cells, which are the first line of internal defense for the body, and can ensure that bladder infections don’t become a chronic problem.