When considering heterosexual couples the importance of sperm quality cannot be over emphasised. Sperm is a vital component of the fertility equation. While sperm testing is critical and the most common test is a correctly performed semen analysis, the quality of testing and the interpretation both require skill. Unfortunately a "normal" semen analysis result does not necessarily infer that the male is fertile or partially fertile. Therefore I need to see the male partners, arrange to test them and explain the implication of their results and how these could affect our approach in fertilty management.
Factors such as alcohol consumption, recreational drugs and obesity can affect male fertility but may not affect the results of the semen analysis!