ELLENABAD, India -- To see Manjeet Kaur around her little daughter is to see joy at its purest.

The 15-month-old toddles about the sprawling courtyard of her parents' farm, her oily curls tied up in a top knot, her rubber-soled shoes squeaking. Kaur's eyes don't miss a thing, and they often mist up with tears.

Gurjeet is the child Kaur yearned for desperately, after 40 years of being that thing which a rural Indian woman dreads more than almost anything else -- barren. She gave birth at 58 years old, with help from a controversial IVF clinic in this corner of north India that specializes in fertility treatments for women over 50.

Such treatments have become more common across the world, and they strike a cultural chord in India, where a woman is often defined by her ability to be a wife and mother. While there are no reliable statistics for how many Indian women undergo fertility treatments each year at what age, tens of thousands of IVF clinics have sprouted up in the country over the last decade.

Fertility specialists say pregnancies like Kaur's are troubling because of the potential health risks and the concern that the parents may not live long enough to raise their babies to adulthood. Legislation is pending in India's Parliament setting 50 as the legal upper age cap.

But Dr. Anurag Bishnoi, the driving force behind the National Fertility and Test Tube Baby Centre in Hisar, harbours no such worries. His clinic's website home page is dominated by photographs of patients who carried babies to term at ages well beyond what most other doctors anywhere in the world may permit. At least two of his patients gave birth at 70.

For Kaur, it's simple enough. Bishnoi made her belong.

"You have no idea how I suffered," she says of her life before her daughter. "The pain I lived with. I used to work all day, but my nights were spent in tears."

Indian couple with daughter

In this Dec. 23, 2016 photo, Manjeet Kaur, left, and her husband Gurdev Singh, right, walk with their daughter Gurjeet Kaur in the compound of their house in Ellenabad, India. (AP / Altaf Qadri)

Kaur married her husband, Gurdev Singh, when she was 18 and he was just a little older than 20. She simply assumed that children would follow marriage, and there was no question of waiting. Her new relatives were relatively wealthy Sikh landowners in this corner of Haryana, and they had the means to raise a family and property to leave to their offspring.

But no children came. She felt worthless.

"I asked God why he had abandoned me. I had been a good Sikh, a good person. Then why?" she asks, as she nervously fidgets with the green scarf she uses to cover her almost entirely grey hair.

With each decade she felt the dream slip further away. The couple tried IVF twice in their 40s at two separate clinics in north India. It didn't work.

A woman in Kaur's setting, without a child, is an inauspicious creature. Her very presence is often shunned at social gatherings, especially at weddings and birth ceremonies which celebrate fecundity.

"What I suffered you will not understand. People would turn their faces away from us," she says, wiping away the tears that run down her cheeks, lined by age and years of working in the sun.

For the vast majority of married Indian women, the inability to produce a child, preferably a son, can result in the taboo of divorce or abandonment by their husbands. For years Kaur begged her husband to take another wife.

"I wanted to marry him off myself. I was willing to do anything for this family. I said to him, this property, this house needs an heir. I haven't been able to give you a child," she says, as she walks through the guava trees outside her house, plucking fresh fruit for her visitors.

Singh refused.

"I said I won't do it," says Singh, a short man with a smile constantly hidden behind his flowing white beard. "If it's meant to be, God will give me a child with you. If I marry again, what will happen to you?"

They lived, like most rural Indians, with extended family, and Kaur showered all her love on the nephew and niece she helped raise. She says it is perhaps her unconditional love that made God and the Sikh gurus turn her fate around.

It was Kaur's nephew who first heard of Bishnoi, the doctor in the nearby town of Hisar, who had built a prosperous medical practice and tidy little business empire by helping aging women across north India have children through in-vitro fertilization. The couple was at first hesitant, thinking about all the problems of such a late pregnancy. But meeting the doctor changed all that.

"He treated us with so much respect and love," Singh says. "Doctor sahib was like a god to us."

Fertility centre in Hisar, India

In this Dec. 22, 2016 photo, Indian patients, seen from behind a fogged glass, wait for consultation inside the National Fertility and Test Tube Baby Centre in Hisar, India. (AP / Altaf Qadri)

Dr. Anurag Bishnoi is called many things. God and quack top the list.

His harshest critics in the medical community accuse the embryologist of making money off the dreams of the desperate, and of taking wildly unnecessary risks with older women. When Bishnoi helped a 70-year-old woman give birth last April, Dr. Hrishikesh Pai, who heads a federation of Indian gynecologists and obstetricians, called him a "rogue doctor" and "repeat offender" who ignores the self-imposed guidelines that most other fertility specialists follow.

Dr. Narendra Malhotra, who heads the Indian Society For Assisted Reproduction, says Bishnoi is driven by a quest for records and has been attempting to "play God."

"We don't endorse making mothers out of grandmothers," he says. "It's too risky for the women. Their bodies are not designed to bear children after 50."

Malhotra notes that if a woman gets pregnant at age 70, her child may be an orphan before the age of 10. He says his association has requested that Bishnoi stop his extreme practice of working with significantly older women, with no success.

"He's not breaking any law because there is no law," Malhotra says. "But there are ethical and moral guidelines."

Most medical ethics guidelines around the world recommend a cut-off between 45 and 50 for treatments like IVF, and the Indian Medical Council sets 45 as the recommended age limit. Across the United States and most parts of western Europe, insurance companies usually stop paying for IVF treatment after 45. In the United Kingdom, the limit for fertility treatments under the National Health Service is 42.

Every now and then, news reports pop up about women across the world giving birth in their 50s and 60s. A Spanish woman gave birth to healthy twins at age 64 earlier this year after fertility treatments at an undisclosed clinic in the United States. A British woman gave birth in 2008 at the age of 57 after treatment at a clinic in Russia.

Pathologist at India fertility centre

In this Dec. 22, 2016 photo, a pathologist works in a laboratory inside the National Fertility and Test Tube Baby Centre in Hisar, India. (AP / Altaf Qadri)

Many private clinics cap treatment at 50 or less, and most doctors offering assisted reproductive treatments to women over 50 do it on the down low. But Bishnoi, a boyish-looking 41-year-old, doesn't hesitate to send a press release to promote his work, and lists at least 30 patients on his website who gave birth between the ages of 50 and 70.

Bishnoi says he is a careful doctor who chooses his patients after a series of medical examinations to ascertain their ability to carry a pregnancy to term. He says age doesn't matter to him; all he examines is whether a patient is physically, emotionally and financially able.

He says he has turned away innumerable patients because he wasn't satisfied they were healthy enough, and has never had a patient die. He complains that the doctors who criticize him don't ask about his clinic's success rate, which is 30 per cent for mothers above 50. It's an average that is low when compared to IVF success rates for women under the age of 45. But for older women, it's an average that Bishnoi considers "decent."

For older patients like Kaur, who make up 20 per cent of his practice, Bishnoi harvests eggs from anonymous donors, but in a deeply patriarchal culture, what really matters is that the sperm belongs to the father. He calls reproduction a "fundamental right," and likens his patients to the military.

"They are soldiers of their family," he says. "And of course the risks involved are there, but soldiers don't care."

Bishnoi says he suggests adoption or surrogacy to most of his patients, including Kaur, but few are interested. Indian families adopted only 2,210 children in 2016, partly because of daunting levels of bureaucratic hurdles. And the importance of caste and religion are major deterrents.

When Bishnoi first suggested Kaur adopt a child, she didn't say anything.

"I just started crying," she says.

Then he asked her to think about using a surrogate. She remembers breaking down and weeping in his office.

"I said, Doctor sahib, I have everything. I even have children around me. Grandchildren too. I play with them, I carry them. Nobody has ever called me 'mummy.' Ever."

"If you can give me a child from my own body, then give me that child."

Fertility centre in Hisar, India

In this Dec. 22, 2016 photo, photographs of Hindu deities are placed on a poster of a doctor holding a baby inside the National Fertility and Test Tube Baby Centre in Hisar, India. (AP / Altaf Qadri)

The packed waiting room at Bishnoi's clinic bears witness to the fact that working-class families across the country are willing to spend their limited savings for a child of their own. The cost of IVF treatment in India is relatively low, even though many families have to pay on their own. At Bishnoi's clinic, one cycle of IVF costs about 110,000 rupees ($1,700), compared to about $12,000 in the U.S.

"This treatment costs as much as buying a buffalo," says Bishnoi, whose patients are largely from farming families.

Gurdev Singh says the money was nothing, as he playfully lets his daughter clamber all over him and coo into his cellphone. "What matters is that he gave us our little doll," Singh says.

Kaur and Singh say they feel no fear and anxiety about raising their child at an age when most people are grandparents.

"This is all God's will," Singh says, as little Gurjeet shrieks "papa, papa," with wild abandon.

Kaur says she has no trouble at all taking care of her daughter. In fact, she is already thinking of trying IVF again to give Gurjeet a sibling. She waits, impatiently, for the day when she can talk to her child.

"One day when she is older, she will share my joys and sorrows," Kaur says. "She will ask me, 'Mummy, how did you pass the days before I came?"'