www.infertilitydoc.net - Male infertility problems are quite common and are the result of hormone imbalances, infections, injuries, varicocele, and vein blockage in the testicles. In fact, about forty percent of the patients that Chicago infertility specialist Laurence Jacobs, M.D. treats are men. Visit www.infertilitydoc.net for more information about male infertility. We serve Chicago, Buffalo Grove, and Crystal Lake, Illinois and all of the surrounding communities.