In this propulsive memoir, an award-winning journalist blends history, science, and cultural criticism, to uncover whether motherhood outside of society's rigid rules and expectations is possible—and whether she fits the mold for what a mother should be.

For so long, Ruthie Ackerman believed that the decision not to have children was a radical act. She'd grown up being told that she came from a long line of women who had abandoned theirs. Plus, Ruthie feared she would pass on her half-brother’s rare genetic disorder. Haunted by this generational inheritance, she goes searching in the twists and turns of her DNA to decide once and for all whether she should become a mother. When a geneticist leaves her at a dead end, she chooses to marry a man who doesn’t want children—only to realize that, despite everything, she desperately does. When Ruthie’s strained marriage ends, her quest for a new vision of motherhood begins.

She eventually finds an image of radical motherhood where women have an opportunity to see their role not just as fulfilling but as powerful. This new mother code goes beyond children and focuses on actively working towards stronger communities and happier, less-stressed parents. But by the time Ruthie meets the right partner and is ready to have the baby she so desperately desires, she learns she can't use her own eggs. Now, Ruthie has to evolve this new mother code as she navigates the scientific, philosophical, and intimate questions about what it means to both create–and nurture–a life.

The Mother Code unravels how we’ve come to understand the institution of motherhood, offering a groundbreaking a new vision: a mother code that goes beyond our blood lines and genetics, and instead, pushes us to embrace inheritance as the legacy we want to leave behind for those we love.