A 52-year-old woman serving as a surrogate mother for her daughter, a contestant on NBC’s “American Gladiators,” has given birth to two of her own grandchildren, a set of twins.

The babies, a boy and a girl, were born Wednesday at an Arizona hospital, the family said.

“I just feel so blessed and fortunate. It’s the best experience of my life,” Crystal Sirignano told The Flint Journal for a story published Friday.

“I don’t regret one second, even the times when I didn’t feel good. None of that was as bad as watching what my daughter went through.”

She has owned Total Body Fitness in Grand Blanc for 25 years while husband D.J. owns John’s Steakhouse in Goodrich, where the couple live.

Crystal Sirignano offered to become a surrogate for her daughter after Kendra Sirignano went through several failed infertility treatments and surgeries.

Dutch scientists are developing a blood test that would detect when a woman will go through menopause.

The test would help women make decisions about their lifestyle, such as the age she should have children. The test measures levels of a single hormone called AMH that decreases when a women becomes less fertile.

Women: Do you want to know when you will go through menopause? Would you take such a test?