A study examined 100 men's fertility through semen analysis at a hospital in Dhaka. They split the men into two groups: 35 had abnormal semen, and 65 had normal semen. The average age was around 34 years for both groups. Men with abnormal semen were more likely to be farmers, work in hot places, have had STDs, mumps, surgeries, or a family history of infertility. They were also more likely to have primary subfertility. The most common issues in the abnormal group were low sperm count (oligospermia) and no sperm (azoospermia). Factors like working in hot places and past surgeries were linked to lower fertility in men.