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A hormonal intrauterine device (IUD), also known as an intrauterine system (IUS) with progestogen and sold under the brand name Mirena among others, is an intrauterine device that releases a progestogenic hormonal agent such as levonorgestrel into the uterus. [2]
Levonorgestrel is a hormonal medication which is used in a number of birth control methods. [3] [7] It is combined with an estrogen to make combination birth control pills. [8]As an emergency birth control, sold under the brand names Plan B One-Step and Julie, among others, it is useful within 72 hours of unprotected sex.
Combined hormonal contraceptives and HRT involve estrogens. Mirena does not contain estrogens, so studies that have linked estrogen exposure to cancer are not applicable to Mirena. Most substances are carcinogenic at very high doses; this does not mean they are carcinogenic at lower doses.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Human reproductive biology is primarily controlled through hormones, which send signals to the human reproductive structures to influence growth and maturation.These hormones are secreted by endocrine glands, and spread to different tissues in the human body.
This time, I deliberately chose the hormonal IUD Mirena for the benefits of a regulated, lighter period. At my yearly checkup last month, I discovered that it had been partially expelled.
An IUS/IUD must be inserted by a health professional. The copper IUD does not contain hormones. While a copper-containing IUD may be used as emergency contraception, the IUS has not been studied for this purpose. Depo-Provera is an injection that provides three months of contraceptive protection. Noristerat is another injection; it is given ...
The development of secondary sex characteristics in women is driven by estrogens, to be specific, estradiol. [11] [12] These changes are initiated at the time of puberty, most are enhanced during the reproductive years, and become less pronounced with declining estradiol support after menopause.