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Tag - in-vitro

 
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July 24, 2026
 

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IN VITRO

The Kyoto District Court in the city of Kyoto heard a complaint Wednesday from a man who says his estranged wife presented someone else's sperm as his and was able to undergo successful fertility treatment using it without his awareness.
51³Ô¹ÏÍø / Crime & Legal
Jun 4, 2026
Man sues hospital after wife gives birth using someone else¡¯s sperm
The woman was sentenced in April 2025 for forging the man¡¯s consent form, but the hospital said it gave adequate explanation and that the man¡¯s claims are incorrect.
A Japanese research team has developed miniaturized testicular tissues called testicular organoids from mouse embryonic stem cells, in a world first.
51³Ô¹ÏÍø / Science & Health
Feb 27, 2026
Japanese researchers create mouse testicular organoids in vitro
Two of the researchers were also the first to create ovarian organoids from mouse embryonic stem cells, in 2021.
With concerns rising over babies whose genetic makeup has been altered to accommodate the parents' preferences, the government aims to submit related legislation during next year's ordinary parliamentary session at the earliest.
51³Ô¹ÏÍø
Dec 4, 2025
Japan eyes ban on gene-edited babies
The government aims to submit related legislation during next year¡¯s ordinary parliamentary session at the earliest.
Japan previously only allowed preimplantation genetic testing for those who could not get pregnant even after multiple embryo transfers following in vitro fertilization or those who experienced repeated miscarriages and stillbirths.
51³Ô¹ÏÍø / Science & Health
Sep 9, 2025
Japan expands preimplantation genetic testing eligibility
Eligibility was limited to those who could not get pregnant after embryo transfers following in vitro fertilization or those who experienced repeated miscarriages and stillbirths.
One out of every 5,000 births is affected by mitochondrial diseases, which cannot be treated, and include symptoms such as impaired vision, diabetes and muscle wasting.
WORLD / Science & Health
Jul 17, 2025
World-first IVF trial reduces risk of babies inheriting diseases
The results raise?hopes that women with mutations in their mitochondrial DNA could one day have children without passing debilitating or deadly diseases on to the children.
Osaka University researchers say they have developed a method to improve embryo implantation rates.
51³Ô¹ÏÍø / Science & Health
Jul 11, 2025
Mouse embryo implantation reproduced in lab equipment
The team also discovered protein interactions that help drive embryo implantation.
Tomomi Bitoh, seen crossing the finish line in Antarctica, on the first stop of the World Marathon Challenge, is one of the very few Japanese athletes to speak publicly about her experience with egg freezing.
MORE SPORTS
May 19, 2025
The race for more time: Japanese runner decided to freeze eggs for her future
More women in Japan are expressing interest or following through with freezing their eggs in recent years, but only a few athletes in Japan have spoken about it publicly.
Sachiko Ishizuka, who was born via artificial insemination by donor (AID), tells her story to lawmakers from the Constitutional Democratic Party of Japan on April 9.
51³Ô¹ÏÍø / Science & Health / FOCUS
Apr 15, 2025
Privacy and transparency clash in debate over bill on artificial insemination
At stake is the thorny question of when children conceived through artificial insemination by donor can access information on their biological parents, and to what extent.
A stick-sized container containing an egg and a tank used to freeze eggs
51³Ô¹ÏÍø / Society / FOCUS
Mar 5, 2025
More women in Japan turn to egg freezing amid increase in financial support
Although the practice is emerging as a new option for women, experts are urging individuals to carefully weigh its benefits and drawbacks.
Only couples experiencing infertility would be eligible to access assisted reproductive technology, while those in de facto marriages and same-sex couples will be excluded.
51³Ô¹ÏÍø / Science & Health
Feb 6, 2025
Assisted reproductive tech bill submitted to Upper House
The proposed legislation is aimed at guaranteeing the right of people born through the use of such technology to know their origins.
Interest has grown worldwide in the genetic testing of embryos for couples trying to conceive through IVF.
51³Ô¹ÏÍø / Science & Health
Oct 17, 2024
Testing for desirable embryos inconsistent and unreliable, new study says
In recent years, interest has grown worldwide in the genetic testing of embryos among couples trying to conceive through IVF.
Republican presidential nominee and former U.S. President Donald Trump dances during a campaign rally at the Cambria County War Memorial Arena in Johnstown, Pennsylvania, on Friday.
WORLD / Politics
Aug 31, 2024
Trump moves to contain fallout of abortion and IVF rows
The ex-president has been under fire from conservatives over an announcement that in a second term he would ensure free in vitro fertilization.
Republican presidential nominee and former U.S. President Donald Trump speaks as he attends a town hall event in La Crosse, Wisconsin, on Thursday.
WORLD / Politics
Aug 30, 2024
Trump¡¯s high-wire act on abortion angers conservatives
The Republican nominee, who often brags about his role in overturning the constitutional right to abortion in the U.S., now claims to promote ¡°reproductive rights.¡±
The Japan Society of Obstetrics and Gynecology has expanded the scope of pre-implantation genetic diagnosis to include diseases that manifest in adulthood.
51³Ô¹ÏÍø / Science & Health
Aug 29, 2024
More PGD tests performed after gynecology group widens scope of procedure
More than twice as many applications for screening have been approved after diseases that manifest in adulthood were included in the tests in 2022.
A medical technician selects eggs for an in vitro fertilization (IVF) procedure Paris in 2019.
WORLD / Society
Jul 25, 2024
IVF mistakes are opening a new front in the fight over reproductive rights
The $40 billion U.S. industry is expected to triple in size over the next decade as more people delay having babies until later in life.
Nikon's new microscope specialized for intracytoplasmic sperm injection, a fertility treatment
51³Ô¹ÏÍø / Science & Health
Jul 3, 2024
Nikon develops microscope for fertility treatment
The product reduces the number of operational steps involved in intracytoplasmic sperm injection by about 75%.
Demand for infertility treatment is high in Japan, where the number of live births fell for eight straight years to another record low last year.
51³Ô¹ÏÍø / Science & Health
Mar 30, 2024
Fertility startups in Japan step in as treatment demand soars
In Japan, shortages of treatment options plague patients as the country grapples with one of the world¡¯s lowest birthrates.
51³Ô¹ÏÍø
Nov 8, 2023
Bill on sperm and egg donors seeks disclosure of some information
The draft seeks to allow information that is not personally identifiable, such as height, blood type and age, to be disclosed without donor¡¯s consent
51³Ô¹ÏÍø / Science & Health
Oct 29, 2023
Mouse embryos grown in space for first time, Japan researchers say
The researchers sent frozen mouse embryos on board a rocket to the ISS in August 2021.
South Korean lesbian couple Kim Kyu-jin (left) and her wife, Kim Sae-yeon, pose with a "pregnant woman" badge during an interview in Seoul last month.
ASIA PACIFIC / Society
Aug 6, 2023
South Korea couple beat same-sex barriers to parenthood
To fight its abysmal birthrate, Seoul offers fertility treatments, cash bonuses and free child care, but only for straight, married couples.
Japan scientists identify clusters of protein believed to trigger Alzheimer¡¯s disease
A team of researchers said they found a ¡°seed¡± that accelerates the amyloid beta accumulation process in the brain, naming it ¡°Peak 1 amyloid beta,¡± as seen in a mouse's brain.
Indian brothers make manga debut in Japan
Two Indian brothers made their manga debut in Japan with "Kung Fu Kung Fool" ¡ª an action-comedy series that follows the adventures of a notorious thief and a young boy.
Japan weighs regulating Pokemon cards amid trading mania
A Pokemon event is held in Jakarta on July 11
Low-income families in Japan cut food and air conditioning during summer break
Yumiko Watanabe, the chairperson of nonprofit Kidsdoor, explains the results of a survey in Tokyo's Chiyoda Ward on July 1.
Iran strikes on CIA facilities prompt questions about possible Russian role
Iranian drones are displayed in an undisclosed location in Iran, in this handout image obtained on Jan. 13, 2025.U.S. officials have acknowledged that Russia has ?provided targeting ?and other support for Iran in its drone strikes on U.S. targets in the Persian Gulf region.
The sci-fi sensibilities of electronic trio Black Boboi
Black Boboi was formed in 2018 when solo artists Julia Shortreed, Utena Kobayashi and Ermhoi came together under Kobayashi¡¯s newly founded label, Bindividual.
A perfect storm: Kaze Fujii fans flock to Fuji Rock
Okayama-born singer-songwriter Kaze Fujii has carved out a distinctive place in Japanese pop since his major-label debut in 2019.
Can Japanese comedy get laughs in English? Yoshimoto Kogyo lets the jokes rip
Wes-P has millions of followers and his viral clips made him recognizable out of Japan.
The 180-day locals: Life on Japan¡¯s digital nomad visa
Christopher Flinn works remotely from Tokyo earlier this month. Japan issued 646 digital nomad visas in 2025, but tourism officials are hoping to increase that figure in the coming years, with Japan's relatively cheap cost of living and the weak yen seen as potential draws for young professionals.
Japan reveals hint of new defense spending target in fiscal blueprint
The Self-Defense Forces' Type 16 mobile combat vehicle fires during a joint live-fire drill with U.S. Marines as part of the annual Resolute Dragon exercises in Yufu, Oita Prefecture, on June 28.

Podcast

One of the many entrances to the Kabukicho neighborhood in Tokyo¡¯s Shinjuku Ward.
Kabukicho: Tokyo¡¯s ¡®stadium of desire¡¯

Longform

For many people, utility poles and power lines have become such a familiar part of Japan¡¯s landscape that they often go unnoticed.
Why Japan¡¯s utility poles won¡¯t be disappearing anytime soon
By Alex K.T. Martin

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