Does smoking or alcohol affect fertility?
Recently several studies have addressed the effects of smoking on male fertility. There is some very good evidence that smoking can have an adverse effect on sperm count, motility, and function. It is always a good idea to quit smoking, particularly when trying to conceive. Alcohol is slightly more controversial. Mild to moderate amounts of alcohol have not been shown to have any effects; however, moderate to heavy amounts can affect sperm count as well as hormone production.
