When you buy through links on our internet site , we may earn an affiliate delegation . Here ’s how it works .

Many transgender men and other grammatical gender - divers people opt to take testosterone tobring about male lower-ranking sex characteristic , such as a deep voice and thicker body and facial hairsbreadth , and to crush distaff feature , such as menstruum . While take this internal secretion therapy , a somebody may no longer get their period , however , they may still ovulate and therefore could potentially get pregnant , a new study finds .

The pocket-sized study included 52transmasculinepeople , meaning the great unwashed who were assigned female person at nascency but whose gender indistinguishability aligns with maleness ; this terminus can admit transgender men and some nonbinary and grammatical gender - fluid people , for instance .

Close-up picture of a blue and white box of AndroGel, aka testosterone gel, containing individual packets of the gel

The new study revealed that a third of transmasculine people taking testosterone may still ovulate even if their periods have stopped as a result of the gender-affirming hormone therapy.

The participant had each taken testosterone for at least a year before produce anoophorectomy , a gender - aver OR to remove one or both of their ovary . After remotion , scientist analyze the affected role ' ovaries to depend for signs of ovulation .

Related : Blood inspissation tied to gender - affirming testosterone is rarefied

None of the study participant were experiencing periods prior to their procedures — typically , testosterone therapy causes patient to stop menstruatingwithin three to six monthsof role . It is often accept that when a individual take testosterone stops menstruate , theyno longer ovulate , imply no egg get loose from the ovaries .

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

However , the novel written report found that 33 % of the participants showed sign of the zodiac that they were ovulate , no matter of how long they ’d been adopt testosterone , how much of it was in their blood or whether they ’d used testosterone colloidal gel or injections . These signs of ovulation let in the presence of fluid - filled sacs where an unfertilized egg develops , or thecorpus luteum , a group of cells that form after ovulation and make hormones that support a potential maternity .

The findings of the new study , issue Thursday ( Feb. 22 ) in the journalCell Reports Medicine , spotlight that transmasculine citizenry on testosterone could still potentially become significant , and therefore , patients should apply contraception if they like to engage in sexual body process that could lead to unwanted gestation .

" The physical and mental issue of an unplanned and unwanted gestation are enormous,“Joyce Asseler , the co - senior study author and a doctoral prospect at Amsterdam University Medical Centers , say in astatement . " It is crucial that transmasculine people and their health care providers are cognisant of this jeopardy and behave accordingly , " she said .

Close-up of young woman�s hand holding birth control pills.

Prior studies have exhibit that transmasculine masses on testosterone could potentially become significant . For instance , a2020 studyshowed that 7 of 20 transmasculine multitude on testosterone therapy had temporary upticks in the levels of a breakdown product ofprogesterone , a sexual activity hormone that supports menstruation , in their water . Lipo-Lutin levels typically peak after ovulation , suggesting that these individuals were likely ovulating and theoretically could have have fraught .

But the fresh field has plump one step further and establish direct evidence of recent ovulatory activity in the ovary of affected role on testosterone therapy .

Future research will necessitate to " delve deep " into why ovulation pass in some people who take testosterone and not others , Asseler told Live Science in an electronic mail . It is also unclear how this capability for ovulation might interpret into someone ’s chances of becoming pregnant , Asseler said .

An artist�s rendering of an oxytocin molecule

Nevertheless , the potential for ovulation still highlights the importance of contraceptive method and reproductive counseling in transgender health care , she added .

— Transgender astronomers speak out about out-of-date name change policies

— Here ’s how a transgender woman breast - feed for 6 weeks

a group class of older women exercising

— How parent and physician can put up transgendered children

" It is of the essence to address this subject due to the significant physical and mental consequences of an unplanned pregnancy , peculiarly considering thelimited access to reproductive healthcarefor transgender and gender diverse individuals worldwide , " she told Live Science .

This is especially apt regard that taking testosterone during gestation caninfluence the developmentof the foetus . Notably , transmasculine people who come off testosteronecan express out a successful pregnancy , should they bid to bear children .

a rendering of an estrogen molecule

This clause is for informational aim only and is not think to offer medical advice .

Ever marvel whysome people make muscleman more easily than othersorwhy freckle come out in the sun ? Send us your interrogation about how the human body works tocommunity@livescience.comwith the subject line " Health Desk Q , " and you may see your question suffice on the website !

a woman clutches her belly in pain

a close-up of a gloved hand holding an IUD

A microscope image of the tissue in the rete ovarii

an illustration of a needle piercing a round cell

Diagram of the mud waves found in the sediment.

an illustration of a base on the moon

An aerial photo of mountains rising out of Antarctica snowy and icy landscape, as seen from NASA�s Operation IceBridge research aircraft.

A tree is silhouetted against the full completed Annular Solar Eclipse on October 14, 2023 in Capitol Reef National Park, Utah.

Screen-capture of a home security camera facing a front porch during an earthquake.

An active fumerole in Iceland spews hydrogen sulfide gas.