Prostate is a small walnut-sized gland, which is a part of the male reproductive system. The main function of the prostate is to produce the seminal fluid, which forms a major part of the ejaculate. This contains substances which helps in liquefying the ejaculate hence helping the sperms to reach the female reproductive tract. Like other parts of the body, cancer can also develop in the prostate gland. It is the most common cancer amongst men affecting about 1 million males in India every year. If detected early it can be treated. But, any delay in its diagnosis enables it to spread across the bones and lymph nodes of the body.