Steroid Contraceptives And Women S Response
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Steroid Contraceptives And Women S Response
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Author : Rachel Snow
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Steroid Contraceptives And Women S Response written by Rachel Snow and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
Pharmacokinetic variability of contraceptive steroids is a relatively under-explored area of contraceptive research, and hardly a common point of discussion among those who plan and deliver family planning services. Nevertheless, numerous independent studies over the last 15 years have indicated that women in different regions of the world vary in their pharmacokinetic response to contraceptive steroids. The causes of such variability are not known, but it has important consequences for contraceptive effectiveness. It may also offer insight to the basis of contraceptive side-effects. The impetus for this volume was to collect documentation of pharmacokinetic variability of contraceptive steroids, and to explore both the possible causes and implications of these data. Factors known to affect steroid pharmacokinetics, such as concurrent use of specific medications, are reviewed by Back and Orme. Other factors known to affect endogenous steroid dynamics are presented in chapters by Bradlow, Longcope, Goldin and Snow, because of their possible role in contraceptive steroid pharmacokinetics.
Steroid Contraceptives And Women S Response
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Author : Rachel Snow
language : en
Publisher:
Release Date : 1994-07-01
Steroid Contraceptives And Women S Response written by Rachel Snow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-07-01 with categories.
Contraceptive Steroids
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Author : A. T. Gregoire
language : en
Publisher: Springer
Release Date : 1986-10
Contraceptive Steroids written by A. T. Gregoire and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-10 with Health & Fitness categories.
One of the United States Food and Drug Administration's most difficult tasks is the assessment of risk-benefit ratios for a broad spectrum of therapeutic and prophylactic drugs. Furthermore, it is now widely recog nized that no drug, chemical or even natural substance is completely devoid of risk. Nowhere has this issue been the subject of more controversy than with steroidal contraceptive drugs. Regulated as a special class of products because of their prophylactic use in healthy individuals for prevention of pregnancy rather than for treatment of disease, steroid contraceptives drugs undergo more extensive animal safety tests than any other pharmaceutical agent. This view also contemplates the availability of alternative contraceptive measures posing fewer risks, but the use of less effective methods must take into consideration the hazards associated with pregnancy itself. In April 1983, the Food and Drug Administration and the National Insti tutes of Health in cooperation with the World Health Organization, the Population Council, and the Agency for International Development sponsored a three-day workshop to evaluate current guidelines for preclinical safety studies of contraceptive drugs in light of our extensive knowledge of the side effects of marketed products. The meeting included presenta tions by experts in the fields of comparative metabolism, pharmacokinetics, pharmacology, carcinogenicity, toxicology, coagulation, lipid metabolism, epidemiology and pathology at a meeting of the Fertility and Maternal Health Drugs Advisory Committee of the National Center for Drugs and Biologics, Food and Drug Administration.
Hormonal Contraception And Post Menopausal Hormonal Therapy
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Author : IARC Working Group on the Evaluation of Carcinogenic Risks to Humans
language : en
Publisher: World Health Organization
Release Date : 1999
Hormonal Contraception And Post Menopausal Hormonal Therapy written by IARC Working Group on the Evaluation of Carcinogenic Risks to Humans and has been published by World Health Organization this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Medical categories.
Evaluates evidence for an increased risk of cancer in women using combined oral contraceptives, progestogen-only hormonal contraceptives, post-menopausal estrogen therapy, and post-menopausal estrogen-progestogen therapy. Although the carcinogenicity of these preparations has been extensively investigated, the book stresses the many complex methodological issues that must be considered when interpreting findings and weighing results. Evidence of an association between use of these preparations and positive effects on health, including a reduced risk of some cancers, is also critically assessed. The first and most extensive monograph evaluates evidence of an association between the use of combined oral contraceptives and cancer at nine sites. Concerning breast cancer, the evaluation concludes that, even if the association is causal, the excess risk for breast cancer associated with patterns of use that are typical today is very small. Studies of predominantly high-dose preparations found an increased risk of hepatocellular carcinoma in the absence of hepatitis viruses. Citing these findings, the evaluation concludes that there is sufficient evidence in humans for the carcinogenicity of combined oral contraceptives. The evaluation also found sufficient evidence for the carcinogenicity of some, but not all, combined preparations in animals. Combined oral contraceptives were classified as carcinogenic to humans. The evaluation also cites conclusive evidence that these agents have a protective effect against cancers of the ovary and endometrium. Progestogen-only contraceptives are evaluated in the second monograph, which considers the association with cancer at six sites. The evaluation found no evidence of an increased risk for breast cancer. Although the evaluation found sufficient evidence in animals for the carcinogenicity of medroxyprogesterone acetate, evidence for the carcinogenicity of progestogen-only contraceptives in humans was judged inadequate. Progestogen-only contraceptives were classified as possibly carcinogenic to humans. The third monograph, on post-menopausal estrogen therapy, considers evidence of an association with cancer at eight sites. Findings from a large number of epidemiological studies indicate a small increase in the risk of breast cancer in women who have used these preparations for five years or more. Studies consistently show an association between use of post-menopausal estrogen therapy and an increased risk for endometrial cancer. Data on the association with other cancers were either inconclusive or suggested no effect on risk. The evaluation concludes that post-menopausal estrogen therapy is carcinogenic to humans. The final monograph evaluates the association between the use of post-menopausal estrogen-progestogen therapy and cancer at four sites. The evaluation of limited data on breast cancer found an increased relative risk observed with long-term use. Data were judged insufficient to assess the effects of past use and of different progestogen compounds, doses, and treatment schedules. For endometrial cancer, the evaluation found an increase in risk relative to non-users when the progestogen was added to the cycle for 10 days or fewer. Post-menopausal estrogen-progestogen therapy was classified as possibly carcinogenic to humans. Concerning post-menopausal therapy in general, the book notes that evidence of carcinogenic risks must be placed in perspective of potential benefits. The prevention of osteoporotic fractures is cited as the best-established benefit. Evidence also suggests that estrogen prevents heart disease and may prevent memory loss and dementia.
Contraceptive Use And Controlled Fertility
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1989-02-01
Contraceptive Use And Controlled Fertility written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-02-01 with Medical categories.
These four papers supplement the book Contraception and Reproduction: Health Consequences for Women and Children in the Developing World by bringing together data and analyses that would otherwise be difficult to obtain in a single source. The topics addressed are an analysis of the relationship between maternal mortality and changing reproductive patterns; the risks and benefits of contraception; the effects of changing reproductive patterns on infant health; and the psychosocial consequences to women of controlled fertility and contraceptive use.
Contraceptive Research And Development
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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 1996-11-04
Contraceptive Research And Development written by Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-11-04 with Medical categories.
The "contraceptive revolution" of the 1960s and 1970s introduced totally new contraceptive options and launched an era of research and product development. Yet by the late 1980s, conditions had changed and improvements in contraceptive products, while very important in relation to improved oral contraceptives, IUDs, implants, and injectables, had become primarily incremental. Is it time for a second contraceptive revolution and how might it happen? Contraceptive Research and Development explores the frontiers of science where the contraceptives of the future are likely to be found and lays out criteria for deciding where to make the next R&D investments. The book comprehensively examines today's contraceptive needs, identifies "niches" in those needs that seem most readily translatable into market terms, and scrutinizes issues that shape the market: method side effects and contraceptive failure, the challenge of HIV/AIDS and other sexually transmitted diseases, and the implications of the "women's agenda." Contraceptive Research and Development analyzes the response of the pharmaceutical industry to current dynamics in regulation, liability, public opinion, and the economics of the health sector and offers an integrated set of recommendations for public- and private-sector action to meet a whole new generation of demand.
Oral Contraceptives And Breast Cancer
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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 1991-02-01
Oral Contraceptives And Breast Cancer written by Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-02-01 with Medical categories.
At least 10.7 million American women use oral contraceptives (OCs). The potential connection with breast cancer has caused concern among these OC users and uncertainty among many of their physicians. This new volume offers the most up-to-date information available on this critical topic. While the best available knowledge does not support any fundamental change in clinical practice with respect to the use of OCs, this book offers specific recommendations for more research to fully resolve the relationship between OCs and breast cancer. Noting consumer confusion, the volume includes a concise summary of benefits, risks, and other practical information for contraceptive users and their doctors. The volume presents current data on changes in patterns of OC use, differences in risk at different ages, the benefits of OCs, and more. Oral Contraceptives and Breast Cancer will be important reading for obstetricians/gynecologists and other health professionals, their patients who use OCs, contraceptive manufacturers, women's health advocates, policymakers, and researchers.
Contraceptive Methods Women Have Ever Used United States 1982 2010
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Author : Kimberly Daniels
language : en
Publisher:
Release Date : 2013
Contraceptive Methods Women Have Ever Used United States 1982 2010 written by Kimberly Daniels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Contraceptives categories.
Developing New Contraceptives
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Author : National Research Council and Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 1990-01-01
Developing New Contraceptives written by National Research Council and Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-01-01 with Medical categories.
There are numerous reasons to hasten the introduction of new and improved contraceptivesâ€"from health concerns about the pill to the continuing medical liability crisis. Yet, U.S. organizations are far from taking a leadership position in funding, researching, and introducing new contraceptivesâ€"in fact, the United States lags behind Europe and even some developing countries in this field. Why is research and development of contraceptives stagnating? What must the nation do to energize this critical arena? This book presents an overall examination of contraceptive development in the United Statesâ€"covering research, funding, regulation, product liability, and the effect of public opinion. The distinguished authoring committee presents a blueprint for substantial change, with specific policy recommendations that promise to gain the attention of specialists, the media, and the American public. The highly readable and well-organized volume will quickly become basic reading for legislators, government agencies, the pharmaceutical industry, private organizations, legal professionals, and researchersâ€"everyone concerned about family planning, reproductive health, and the impact of the liability and regulatory systems on scientific innovations.
Medical Eligibility Criteria For Contraceptive Use
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Author :
language : en
Publisher: World Health Organization
Release Date : 2010
Medical Eligibility Criteria For Contraceptive Use written by and has been published by World Health Organization this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Business & Economics categories.
Medical Eligibility Criteria for Contraceptive Use reviews the medical eligibility criteria for use of contraception, offering guidance on the safety and use of different methods for women and men with specific characteristics or known medical conditions. The recommendations are based on systematic reviews of available clinical and epidemiological research. It is a companion guideline to Selected Practice Recommendations for Contraceptive Use. Together, these documents are intended to be used by policy-makers, program managers, and the scientific community to support national programs in the preparation of service delivery guidelines. The fourth edition of this useful resource supersedes previous editions, and has been fully updated and expanded. It includes over 86 new recommendations and 165 updates to recommendations in the previous edition. Guidance for populations with special needs is now provided, and a new annex details evidence on drug interactions from concomitant use of antiretroviral therapies and hormonal contraceptives. To assist users familiar with the third edition, new and updated recommendations are highlighted. Everyone involved in providing family planning services and contraception should have the fourth edition of Medical Eligibility Criteria for Contraceptive Use at hand.
