Erectile dysfunction (difficulty getting and/or keeping an erection; impotence) is another side-effect associated with all treatments for prostate cancer. Other treatments for prostate cancer cause problems with erectile dysfunction in 30–60% of men (as seen in Table 1), but these problems are much less common after LDR brachytherapy, and only occur in about 10–30% of men under the age of 60 years, who were potent before treatment.[1]