Elizabeth Brown and two of her law school friends all plan to freeze their eggs in the next few years if they're still single. The 29-year-old associate at New York real estate firm Rosenberg & Estis loves her job and doesn't want to tear herself away from it.

"Knowing that you can freeze your eggs, it takes so much of the pressure off," she says, adding of the need to go on a random date: "I'd rather go home and have a glass of wine and watch Netflix."

When Brown was in her third year at Cardozo School of Law, the American Society for Reproductive Medicine removed the experimental label from oocyte cryopreservation or egg freezing, The idea that it was possible to freeze eggs – rather than embryos – changed the way that millennial lawyers thought about childbearing and ushered in what fertility specialists are calling a new era of reproductive autonomy. The takeaway: women can have a child from their own egg as late as age 56.

Lawyers, of course, weren't the only ones to flock to preserve their eggs. But experts say they were more likely to do so because they could afford the $20,000 to $30,000 in out-of-pocket costs for the medicine to stimulate egg production, the extraction of the eggs, the storage fees and in vitro fertilisation.

Plus, the long career path from college to law school to the bar exam to a clerkship, an in-house job or a stint in the U.S. Attorney's office meant that lawyers often reached their prime childbearing ages just as they were establishing themselves at law firms. Brown, for instance, arrived at Rosenberg & Estis in the summer of 2018 after an in-house counsel job.

Jacqueline Klosek of Goodwin

Jacqueline Klosek, counsel to Goodwin Procter's business law department, says "it would have been really hard to get the career off-track and assume I could get it back on", if she had wanted to become pregnant at an earlier age. By her late 30s, when her gynaecologist asked her if she wanted a family, she was still ambivalent. "I honestly wasn't sure whether I wanted to have children, but I wanted to keep my options open," she says.

So she went on medication to stimulate her ovaries to produce multiple eggs at the age of 38 and ended up with 30. Because she had a boyfriend with whom she had a serious relationship, her doctor suggested that she divide the eggs, fertilising half to create frozen embryos and leaving the rest unfertilised in case she chose to have children with a different mate. (Doctors prefer freezing embryos to eggs when that's an option because they are more stable and can be tested for abnormalities.)

Klosek did end up staying with her boyfriend, Tom Lozinski, who is now her husband, and they conceived Kayla six years ago. But three years later, Klosek wasn't able to get pregnant a second time, and she had one of the frozen embryos implanted. Luca is now two.

What would have happened if the gynaecologist hadn't asked that fateful question?

"Thinking that I could not have my son … I couldn't even think about that," she says. "To have missed that because I waited too long would have been really hard to accept."

Until the last five years, lawyers like Klosek and Brown would be unlikely to see a fertility specialist unless they were having trouble becoming pregnant. Stories abound of an earlier generation of lawyers who found themselves unable to conceive because they were too old by the time they sought help.

Dr Alan Copperman. Photo: David Handschuh/NYLJ

"For decades, a lot of young lawyers have missed opportunities to build families and this technology puts that ability back into their hands," says Dr Alan Copperman, director of the division of reproductive endocrinology and infertility at Mount Sinai Health System. "When I started practising 25 years ago, I was seeing a lot of 40-year-olds who had missed their opportunities to have families and I could only do so much for them."

Copperman, who is also the medical director of RMA of New York, says he sees a lot of lawyers, especially from the firms near the fertility clinic's offices at 59th Street and Madison Avenue. "Just as a birth control pill is great at preventing u­nwanted pregnancy, egg freezing is really getting pretty good at enabling wanted pregnancy," he says.

He suggests that lawyers who are not ready to start families after law school have fertility checkups in their 20s. This involves a family history, a pelvic ultrasound and a blood test for the anti-mullerian hormone, which is an indicator of how many eggs still remain in the ovarian reserve. More eggs must be extracted if a woman is older when she chooses to extract them, because 90 percent of eggs are normal in a woman's 20s but 90 percent are abnormal by her 40s.

"So whether someone has cancer and they're about to have chemotherapy or whether someone is 39 and they're about to be 40, this is a medical condition," Copperman says. "Medically, we're preventing disease."

Even though Copperman sees it as a medical procedure, that doesn't mean that traditional insurance companies are covering egg freezing. It was estimated in 2017 that 5 percent of companies, including Facebook and Uber, are making it an employment benefit and Copperman said the list is growing.