As of 2019, there is limited high level evidence to suggest that eating vegetable and fruits decreases the risk of<unk> . A 2008 study concluded that "specific fruit and vegetables may act to reduce the risk of<unk> ." Fruit and yellow-orange vegetables, particularly carrots and those containing selenium, are probably associated with a moderately reduced risk of<unk> . Citrus fruits and cruciferous vegetables were also identified as having a possibly protective effect. However an analysis of 47,909 men in the Health Professionals Follow-Up Study showed little relation between cancer reduction and high consumption of fruits and vegetables overall, or yellow or green leafy vegetables specifically, compared to the reduction seen among those men who consumed large amounts of cruciferous vegetables. An inverse relation between in-takes of flavonols and lignans (diphenolic compounds found in whole grains, legumes, fruits and vegetables) and aggressive<unk>  has also been described. While it is suggested that the polyphenol compounds in tea may have an inhibitory effect on<unk>  tumor formation and growth, there is limited evidence to suggesting drinking tea decreases<unk>  risk. In a 10-year study involving almost 49,000 men, researchers found that men who drank at least 1.44 L of water (around 6 cups) per day had a reduced risk of<unk>  when compared with men who drank less. It was also found that: "the risk of<unk>  decreased by 7% for every 240 mL of fluid added". The authors proposed that<unk>  might partly be caused by the<unk>  directly contacting carcinogens that are excreted in urine, although this has not yet been confirmed in other studies. Screening As of 2019 there is insufficient evidence to determine if screening for<unk>  in people without symptoms is effective or not.
Bladder cancer
Interstitial cystitis
Urethral cancer
Ureteral cancer
Acute prostatitis
Prostate cancer
Penile cancer
Pyonephrosis