Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

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Nishmat HaBayit Research Institute


Machon Nishmat HaBayit was established in 2012 as a Research Institute of Nishmat’s Yoatzot Halacha, with the goal of putting the work of the Yoatzot Halacha into writing. Yoatzot Halacha have been strengthening the observance of Taharat Hamishpacha for over two decades, offering a supportive woman-to-woman halachic response incorporating an in-depth knowledge of women’s health and related fields.

The Yoatzot Halacha initiative was established in 1999, and Yoatzot Halacha have answered tens of thousands of questions through Nishmat’s Golda Koschitzky Hotline, websites in four languages, and in communities in Israel and worldwide. The work of the Yoatzot Halacha is rooted in yirat shamayim and a strong commitment to halachic observance.

The activity of the Research Institute builds upon the activity of Yoatzot Halacha in the field. The Institute publishes in-depth halachic discussions based on sources, incorporating current medical information and sensitivity to the woman asking, in accordance with the general work of the Yoatzot Halacha over the years.

The Institute’s publications are intended as a resource for those who respond to questions and who study halacha, for teachers and kallah teachers, and for the general public. The Institute seeks to provide relevant medical-halachic information and also to impart a model of appropriate language for responding to women on these sensitive topics.

The Beit Midrash for Yoatzot Halacha operates within the framework of the Research Institute.

The first volume of Nishmat HaBayit was published in Hebrew in November 2017. The book contains 63 questions that were asked of Yoatzot Halacha over the years in the areas of pregnancy, childbirth, breastfeeding, and contraception. The second section of the book includes up-to-date medical appendices on these topics. The English translation of the book is expected to be released in 2022.

The book was produced by a staff of seven Yoatzot Halacha (Research Institute Fellows), under the direction of Yoetzet Halacha Rabbanit Michal Roness. The responses were reviewed by Rav Yehuda Henkin z”l and Rav Ya’akov Warhaftig (directors of the Yoatzot Halacha initiative), and edited by Rav Yehuda Henkin z”l and Rabbanit Chana Henkin (founders and directors of Nishmat and the Yoatzot Halacha initiative).

The book has received the endorsement of numerous Rabbis, including: Rav Dov Lior, Rav Aryeh Shtern, Rav Moshe Ehrenreich, and others.

The book was published by Maggid – Koren Publishers and can be purchased here through their website.

The first pages of the book can be viewed here.

The Research Institute Fellows have produced booklets on various halachic-medical topics, and are currently at work on the second volume of Nishmat HaBayit, which will address questions relating to mikveh immersion.


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All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.


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