Premature ejaculation can occur at any age. Surprisingly, aging appears not to be a cause of premature ejaculation. However, the aging process typically causes changes in erectile function and ejaculation. Erections may not be as firm or as large. Erections may be maintained for a shorter period before ejaculating. The feeling that an ejaculation is about to happen may be shorter. These factors can result in an older man having an ejaculation earlier than when he was younger.