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Newlyweds Jessa Duggar, 22, and Ben Seewald, 19, have got babies on the brain.

The 19 Kids and Counting stars chat with PEOPLE about their first three months of marriage and speak candidly about their plans to start a family.

“Kids are so important,” Jessa says, “We hope to adopt a lot of kids. If God blesses us with biological kids of our own, it’s not going to quench our desire to adopt.”

The reality star adds: “Even before we were married, we wanted to adopt.”

Jessa’s plans for adoption comes after years of criticism that her parents – Michelle Duggar and Jim Bob Duggar – have contributed to the planet’s overpopulation crisis.

“We have studied it and I believe that there is a misconception about overpopulation,” Michelle told Celebrity Baby Scoop of the criticism. “I think that the whole mindset of overpopulation is really overrated. A few years back, we stated that the whole population of the world could be stood shoulder-to-shoulder in Jacksonville. That may have changed a little bit since we’ve heard that statistic.”

Jessa’s sister Jill Duggar is currently expecting her first child with husband Derick Dillard, and her brother Josh Duggar is expecting his fourth child with wife Anna.

19 Kids and Counting airs Tuesdays at 9 p.m. on TLC.