Their newborn twins are fine, but not so for the “world’s oldest parents” — both are in intensive care.

The couple from India, both in their 70s, had created an international stir back on Sept. 5, when their baby girls — conceived through a donor egg and delivered by cesarean section — arrived full-term and healthy.

Not surprisingly, it’s now the babies’ elderly mom and dad who are not doing so well, The Times of London reports.

And as the new parents — mom is 74, and dad is 78 — remain in an Indian ICU, new controversy is whirling in the already ethically suspect case.

The doctor who handled the pregnancy is insisting he was tricked into believing that the mom was in her 60s.

“It was only by chance, after she had conceived, that her husband let out accidentally to one of the nurses her real age,” Dr. Sanakkayala Umashankar told The Times of London.

“I was livid!”

Mom Erramatti Mangayamma has been in intensive care since the delivery.

Dad Raja Rao on the other hand, started out strong, crowing to the press just hours after he and his wife became first-time parents.

“Due to the grace of God and doctors, I am the proud father of two baby girls,” he bragged.

“We are the happiest couple on earth today.”

But a day later, he collapsed from a heart attack.

He remains in the ICU at the Ahalya Nursing Home in Guntur, in the southern state of Adhra Pradesh, the Times reports.

His wife is there, too. Doctors are not releasing information on their illnesses, except to say both are stable.

Meanwhile, the twins, who have yet to be named, are putting on weight nicely.

Born at just under five pounds each, both now weigh 5.5 pounds, according to the mother’s niece, Lakshmi Bhia, who told the Times that should the parents be unable to raise them, family members are ready to step in.

Despite the recriminations of ethicists — who question India’s unregulated use of in vitro fertilization — relatives still hail the twins’ arrival as a medical miracle, Bhia said.

The couple were desperate to become parents during their 57-year marriage, facing scorn for being infertile, she said.

They finally decided to adopt, Bhia said. But when they visited the Ahalya facility, Umashankar had another idea.

“Instead of adoption, the doctor recommended IVF because my aunt’s physical condition was so good,” the niece said.