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Providing teenager with free contraceptive method dramatically reduces their chances of unintended pregnancy , a new study shows .

On average , nearly 16 percentage of sexually experient femaleteens will get pregnant in a give year , but few than 4 pct of the teens who welcome liberal contraceptive method did in the young study , published Thursday ( Oct. 2 ) in The New England Journal of Medicine .

A teen looks at her pregnancy test result

The researchers also discover that when given a option of methods , most three - quarter of young woman in the study chose anintrauterine machine ( IUD)or internal secretion implant for nativity control . The American Academy of Pediatrics recently indorse these long - act physique of birth control as the best antifertility methods for stripling and teens .

" IUDs and implant are only used by probably less than 5 percent of adolescents across the nation , " state Dr. Jeffrey Peipert of Washington University School of Medicine in St. Louis , who co - authored the new field . " We were surprised at how commonly pick out these method were — that was shocking to us . " [ Birth Control Quiz : Test Your Contraception Knowledge ]

More than 9,000 women years 14 to 45 enter in the study , known as the Contraceptive CHOICE Project . Participants obtain counselling about contraceptives that emphasized the long - acting method , which have been proven to be most effective . The women were then given their preventative of alternative , gratis of charge , and watch over for two to three years .

a close-up of a gloved hand holding an IUD

The new report focuses on the 1,404 study participants who were 15 to 19 years old , 72 percent of whom select an IUD or implant . On average , during the study period , the annual pace of pregnancy was 3.4 percent , versus 15.9 pct among this years mathematical group in the general universe .

During the study , an average of 1.9 percent of the study participants turn over parturition annually , versus 9.4 percent of teens in the general universe . The yearly pace of abortions was less than 1 pct for teens in the study , versus 4 percentage for teens overall .

admission to long - acting antifertility method in the United States is " spotted " at good , Peipert order Live Science . Many char — andeven many doctors — do n’t know thatthese method are safe for teensand young womanhood , he pronounce , and many health maintenance providers are n’t train in how to employ them .

A stock illustration of particles of HPV (in pink) amongst cells (in green)

Another big barrier is cost , Peipert said . " These method can be up to $ 700 for the gimmick itself , and then introduction costs can well put it over $ 1,000 , " he said .

Although this is much pricier than getting condoms at the drugstore or buying a packet ofbirth control contraceptive pill , the facts are that long - acting method acting can be used for several years , that they are more effective and that women are more probable to keep using them . All of this have in mind that they wind up being more cost - effective .

Nevertheless , " if you have to make up out of pocket , it ’s almost prohibitive for many woman , " Peipert said .

a pregnant woman touches her belly

" Our hope is that the Affordable Care Act will permit more and more women to have access to these method , " he impart . However , the law allow insurance firm to choose out of cover contraceptive method , or to only cover certain methods .

critic may say that providing contraception for teens encourages sexual activity , " Peipert acknowledged .

But much research has shown that teenager are n’t more potential to have sex if contraception is made usable to them , he said .

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Spermatozoa, view under a microscope, illustration of the appearance of spermatozoa.

an illustration of a needle piercing a round cell

A new study used functional magnetic resonance imaging to show dramatic changes in the brain during pregnancy. Pregnancy increased gray matter loss and reshaped the default mode network, which is responsible for the mind wandering and a sense of identity.

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