Dr. Williams on ABCNews.com

ABC news featured reproductive urology specialist Dan Williams, M.D. on the Health section of its website in an article titled Avoid or Ignore?: Eleven Sperm-Killing Suspects.

The story separates factors that inhibit male fertility from “urban legends” with no proven link.

Williams emphasizes that infertility is a couples issue that calls for a specially trained urologist.

He describes a common culprit called varicocele (varicose veins surrounding the testicle) that is treatable with surgery.