Judul : birth control that causes weight loss
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birth control that causes weight loss
contraception, with a variety of methodsavailable many people are able to avoid unintended pregnancies. but what happenswhen things don't go quite as planned? thanks to modern science a second chanceis possible. so how does emergency contraception or "plan-b" work? and whatexactly is happening inside the female body? during the female menstrualcycle many hormones are released
birth control that causes weight loss, beginning a chain reaction. the pituitarygland in the brain releases fsh which stimulates the growth of folliclesand a premature egg in the ovaries. these follicles then releaseestrogen which helps prepare the uterus liningand triggers the brain to release leutinizing
hormone or lh. lh thentriggers ovulation in which the egg is released into the fallopian tubes where itwill spend around twelve to twenty-four hours waiting to be fertilized. if theegg isn't fertilized in this time it begins to dissolve and is shed away withthe uterine lining during menstruation. though this window of opportunity is briefit's increased by the fact that sperm can live for up to five days. so the keen sperm from days ago show up early to the show anxiously awaiting ovulation. birth control pills taken on a regularbasis modify these hormone levels. by
increasing progestin levels the bodythinks it's already released an egg or already pregnant. it effectively decreases fsh and lh and the cycle halts. but in the case of emergency contraception which is onlytaken if regular contraception methods fail, a few different mechanisms take place. the most important thing to understand is that fertilization doesn't happenimmediately or even within hours after intercourse. instead the sperm mustundergo a few biological changes in the fallopian tube first which takes time. this is why emergency contraception is
still possible the morning after. it can actually work up to five daysafter intercourse. if taken during the first half of the menstrual cycle,emergency contraception works specifically to prevent ovulation. this way the egg is not released eventhough it may be ready and the available sperm cannot fertilize it. in cases where it's too late to inhibit ovulation emergency contraception is thought toalso thicken cervical mucus trapping sperm. as well, it may directly inhibitfertilization between sperm and egg.
clinical studies show that emergencycontraception prevents pregnancy before fertilization. no studies haveshown an effect from emergency contraception if fertilization hasalready occurred. it does not stop implantation from happening nor does ithave any effect after implantation has occurred. in this way, its unable to cause an abortion. and while there are some minor side effects tothese drugs, such as nausea and headaches, scientific studies have demonstrated itssafety in women of all ages and found that the benefits far outweigh any risks. got of burning question you want answered?
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