Spontaneous cure of male infertility.

Four of sixteen couples whose infertility was thought to be due to a male factor achieved a pregnancy without treatment. Pregnancy without therapy, despite compromised sperm counts or motilities, has been documented by a number of other authors. Despite this information many studies concerning the treatment of male infertility neglect to include control groups, and pregnancies which occur are credited solely to the therapy. Such claims of therapeutic success should be viewed with caution.