Cranberry juice doesn't cleanse the systems of the body, but it can prevent blood clots and cancerous tumors and reduce swelling due to its high salicylic acid content, according to WebMD. Cranberry juice is also effective at preventing urinary tract infections.
The properties of cranberries found in cranberry juice stop bacteria from attaching to the cells of the body, reports Organic Facts. This makes cranberry juice good at preventing urinary tract infections, because the bacteria are unable to stick to the urinary tract, according to WebMD. Cranberry juice also prevents the attachment of bacteria to teeth, which reduces tooth decay, and it stops bacteria from sticking to the skin, which reduces the transmission of respiratory infections, according to Organic Facts.
Other health benefits associated with cranberry juice include reduced risk of heart disease, weight loss, and kidney stone prevention. Cranberries contain flavonoids, an antioxidant that suppresses low density lipoproteins that constrict the arteries. The suppression of these artery-restricting lipoproteins allows oxygen-rich blood to move freely, reducing the risk of heart disease. Cranberries have a high acid content that keeps kidney stones from forming and has an emulsifying effect on fat in the body. When combined with a healthy diet and exercise, this helps shed extra weight.