Our website assists physicians treating women who observe taharat hamishpacha. Developed by Nishmat, jewishwomenshealth.org is under the halachic supervision of Rabbi Yehuda Henkin and the medical supervision of Dr. Deena Zimmerman. Nishmat developed and administers the website as a public service. We provide sophisticated, detailed, halachically and medically accurate information on every aspect of the laws of niddah and their interaction with modern medicine.