Chemoprevention
The use of specific natural or man-made drugs, vitamins, or other agents to reverse, suppress, or prevent cancer growth. Several agents, including difluoromethylornithine (DFMO), isoflavonoids, selenium, vitamins D and E, and lycopene have shown potential benefit in studies. Further studies are needed to confirm this.

Diet and Lifestyle
Research shows that certain lifestyle habits—particularly related to diet—may reduce a person’s risk of developing prostate cancer, though there is currently no definitive way to prevent the cancer. Research suggests that those who do not overeat, avoid high-fat foods, and drink alcohol in moderation are on the right track. Introducing fruits and vegetables and foods rich in omega-3 fatty acids appears to reduce certain risk factors

Hormonal Prevention
Studies are underway to discover the role of certain drugs, such as finasteride, that reduce the amount of male hormone as preventive agents for prostate cancer.