A cohort study is conducted to evaluate the relationship between dietary fat intake and the development of prostate CA in men. In the study, 100 men with a high fat diet are compared with 100 men who are on a low-fat diet. Both groups start at age 65 and are followed for 10 years. During the follow-up period, 10 men in the high fat intake group are diagnosed with prostate cancer and 5 men in the low-fat intake group develop prostate cancer. The RR above suggests that the risk of prostate CA associated with consumption of a high fat diet is ________.
1) Decreased
2) Increased
3) Not affected
4) Cannot be determined from the information provided