fazTimes media: Scientists have made a big discovery that could change how humans have babies in the future. They say making real human sperm and eggs in a lab isn't science fiction anymore—it's just a few years away. Experts like Professor Katsuhiko Hayashi from Osaka University think that advances in in vitro gametogenesis, or IVG, could greatly affect how we think about having kids, building families, and managing population growth.

The Guardian reports that Professor Hayashi, who is known for his work in developmental genetics, says his team might be able to create human sex cells from adult body cells, like skin or blood cells, within the next seven years.

This process starts by turning adult cells into something called induced pluripotent stem cells, which can then become egg or sperm cells.

The Race to Rewrite Reproductive Biology

Professor Hayashi is a leading name in this scientific field, but he isn't the only one developing this new technology. Matt Krisiloff, the CEO of Conception Biosciences, said that making human eggs in the lab could greatly increase the time women have to have children.

“We’re not just talking about helping people have kids,” Krisiloff said in an interview with The Guardian.

How IVG Works?

At a recent conference in Paris called ESHRE, Professor Hayashi shared that his lab successfully made early-stage mouse sperm using an artificial testis that's just one millimeter wide. His team also made progress in creating a lab-grown human ovary organoid, which is a big step toward making human eggs outside the body.

However, there are still challenges.

Mice With Two Fathers—Could Humans Be Next?

One of the most talked-about experiments in this area was creating mice that had two biological fathers.

A lab led by Hayashi made a healthy mouse using cells from two male mice, which surprised both scientists and people who study ethics. Although applying this research to humans would present significant ethical and scientific challenges, it suggests that same-sex couples might one day be able to have biological children.

"It's not impossible," Hayashi said, but he also pointed out that moving from mice to humans comes with many safety issues and rules that need to be followed.

What Experts Say

Other scientists agree that IVG is moving beyond just ideas and into real research. Professor Rod Mitchell, a fertility expert at the University of Edinburgh, said, “Real progress is happening. People should know that sperm or egg cells made from adult cells could become possible within five to ten years.”

In the UK, using lab-made sperm or eggs for human fertility treatment is still against the law. The Human Fertilization and Embryology Authority (HFEA) is now looking into changing the rules to allow this new development in reproductive science.

Applications and Concerns

If IVG is proven to be safe, it could be a big help for millions of people who have trouble getting pregnant, such as cancer survivors, older adults, and those born with certain conditions. It might also give hope to same-sex couples who want to have babies that are biologically theirs. But this technology brings up important ethical issues.

There are worries about unexpected genetic problems, the possibility of using IVG for things like improving babies in ways that aren’t necessary for health, and the idea of creating "designer babies" through genetic editing before a baby is implanted.

Even Hayashi, who helped develop this technology, has mixed feelings about its future, especially when it comes to older women being able to have babies or same-sex couples having biological children.

He said, “Science must be careful not to run ahead of society.” There’s also the possibility that IVG could change how we think about having babies.

Regulation Is Key

As reported by Al Jazeera, regulatory groups in Japan, the US, and Europe are already looking at the long-term safety tests that need to be done before IVG can go from the lab to real medical use. One of the biggest challenges is showing that the gametes made through IVG are genetically stable and can result in healthy babies.

Matt Krisiloff agreed with these difficulties, saying, “The technology might reach the clinic in five years, but that’s only if we can prove it’s safe—and that’s something we can’t rush.”However, Krisiloff is still hopeful.

He thinks IVG could be used to help stop hereditary diseases and support people who have lost their ability to have children because of medical treatments. He also strongly supports strict ethical rules to guide this technology.

Public Interest Is Rising

Hayashi said he often gets messages—sometimes every week—from people around the world who are trying to have babies. Many of them want to come to Japan to take part in early studies. “This shows that people are interested and hopeful,” he said.

But he also talked about the responsibility that comes with this interest. “We can’t let them down by moving too fast. We need to make sure what we do is safe and follows the right rules.”

Conclusion

In vitro gametogenesis, or IVG, is one of the most exciting—and tricky—areas of science today. Scientists are nearing the ability to create sperm or eggs from skin cells, raising questions about identity, morality, and humanity.

Even if the first lab-made sperm or egg is used in a clinic within five to ten years, one thing is certain: the way we think about becoming a parent, once based on time and biology, might soon change because of science.

As we follow these developments, we may start to rethink not just how babies are made, but also what family means, what is ethical, and where humanity is heading.

fazTimes will keep you updated on the latest in reproductive science and share special news as this important field grows.

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