About
Male Fertility
The average man produces 50-100 million new sperm cells every day. It takes 3 months for those immature sperm to develop into fully functional swimmers capable of fertilizing an egg. The health and fertility potential of your mature sperm depends on the conditions in your body during sperm production and development.
Most people don't know that men cause up to 50% of infertility problems and that sperm health is just as important as egg quality. Poor sperm health lowers the chance of conceiving naturally and the effectiveness of assisted reproductive techniques like intrauterine insemination (IUI) and in vitro fertilization (IVF).
It takes two to get pregnant, and with the Swimmers Fertility Program, you can now do your part. By taking the Swimmers Antioxidant Formula daily, and following your personalized Swimmers Assessment Fertility Plan, you can have the peace of mind knowing you are doing what you can to maximize your sperm health and reproductive outcome for you and your partner.
Identifying opportunities to improve your sperm health is the first step towards maximizing your fertility. The Swimmers Assessment is designed by male infertility experts to provide you with personalized, simple, and evidence-based recommendations to optimize your sperm quality and reproductive potential.
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Learn about the doctors who are changing the male infertility landscape.
Dr. Stahl is a board-certified urologist with subspecialty training in male infertility, male sexual medicine, and microsurgery. He currently serves as Director of Male Reproductive & Sexual Medicine and Assistant Professor of Urology at the Vagelos College of Physicians & Surgeons at Columbia University in New York City.
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Cigdem (“Cori”)Tanrikut, MD, FACS, is a reproductive urologist at Shady Grove Fertility in the Washington, DC, metropolitan area. After graduating summa cum laude from the University of Pennsylvania in Philadelphia, Dr. Tanrikut received her medical degree from the Georgetown University School of Medicine.
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Dr. Stember is a board-certified urologist who specializes in male fertility and sexual health. He received his medical degree from New York University School of Medicine and completed a general surgery internship and urology residency at Mount Sinai Hospital.
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Dr. Stahl is a board-certified urologist with subspecialty training in male infertility, male sexual medicine, and microsurgery. He currently serves as Director of Male Reproductive & Sexual Medicine and Assistant Professor of Urology at the Vagelos College of Physicians & Surgeons at Columbia University in New York City.
Dr. Stahl’s clinical practice is focused on the medical and surgical management of disorders that affect male reproductive & sexual function. He is a recognized regional and national leader in male infertility and has published more than 100 articles, book chapters and abstracts in the peer-reviewed medical literature. He commonly gives invited lectures both regionally and nationally to educate other physicians about male reproductive medicine and surgery.
He is a member of numerous medical societies including the American Society of Reproductive Medicine and American Urological Association, and serves as a reviewer for major medical journals including The Journal of Urology, Fertility & Sterility, and Andrology. Dr. Stahl is a co-author, along with Dr. Stember, of the textbook “Clinical Care Pathways in Andrology.”
Cigdem ("Cori") Tanrikut, MD, FACS, is a reproductive urologist at Shady Grove Fertility in the Washington, DC, metropolitan area. After graduating summa cum laude from the University of Pennsylvania in Philadelphia, Dr. Tanrikut received her medical degree from the Georgetown University School of Medicine in Washington, DC. She completed her Urologic Surgery residency training at Massachusetts General Hospital (MGH)/Harvard Medical School in Boston, and then continued on to Weill Cornell Medicine in New York City to pursue a fellowship in Male Infertility and Microsurgery.
Upon completion of her fellowship training she took a staff position at MGH/Harvard in 2007 as the Director of Male Reproductive Medicine at the MGH Fertility Center. While at Harvard, she ascended to Associate Professor of Surgery at Harvard Medical School and was named the Quality Chair for the MGH Department of Urology. She returned to Washington, DC, in the fall of 2017 to join Shady Grove Fertility as the Regional Director of Reproductive Urology with an academic appointment in the Department of Urology at the Georgetown University School of Medicine.
Dr. Tanrikut has served numerous leadership roles in various national societies, including as President of the Society for Male Reproduction and Urology, and has lectured extensively nationally and internationally. Dr. Tanrikut’s research endeavors include assessing how lifestyle and medications may impact male reproductive health, sperm banking trends, and sperm-related factors that impact and optimize fertility treatment outcomes.
Dr. Stember is a board-certified urologist who specializes in male fertility and sexual health. He received his medical degree from New York University School of Medicine and completed a general surgery internship and urology residency at Mount Sinai Hospital. He was accepted into a combined two-year clinical and research fellowship in male infertility and microsurgery at Weill-Cornell Medical College and sexual medicine at Memorial-Sloan Kettering Cancer Center.
Dr. Stember has a faculty appointment at Mount Sinai Hospital in New York. His clinical work, both in the office and operating room, is focused on male subfertility, testosterone deficiency, and erectile dysfunction. In addition to training residents and fellows at Mount Sinai, Dr. Stember has served as an invited guest lecturer on male infertility to medical students at SUNY Downstate Medical School in Brooklyn.
Dr. Stember has co-authored more than 150 articles, book chapters, and abstracts in the field of men’s health and has presented at numerous national and international conferences. He has also served as a reviewer for major publications including The Journal of Urology and The Journal of Sexual Medicine. He is a co-author, along with Dr. Stahl, of the textbook “Clinical Care Pathways in Andrology.”
Dr. Stember was approached by the Bronx Veterans Affairs Hospital to help with an infertile veteran who had been paralyzed by a sniper’s bullet in Iraq. Dr. Stember performed two surgical sperm retrieval procedures and worked with a female fertility specialist who successfully used the harvested sperm for in vitro fertilization, resulting in the delivery of a healthy baby girl. The New York Daily News covered the story on its front page, with the headline “Miracle Baby,” in March 2019.
