Why Chronic Disease May Begin Before Birth | Leslie Stone, Kalea Wattles & Emily Stone Rydbom

The traditional medical paradigm has long viewed pregnancy as a 40-week journey that begins with a positive test and ends with delivery. However, a growing body of evidence in the field of functional medicine suggests that the blueprint for a child’s lifelong health—and their risk for chronic diseases like diabetes, hypertension, and neurodevelopmental disorders—is drafted months, if not years, before conception. In a comprehensive clinical dialogue, Dr. Kara Fitzgerald, alongside pioneers Dr. Leslie Stone, Emily Stone Rydbom, and Dr. Kalea Wattles, has outlined a transformative approach to reproductive health that leverages epigenetics and precision nutrition to break the cycle of intergenerational chronic illness.

The Rising Crisis in Maternal and Neonatal Outcomes

Despite the United States possessing some of the most advanced medical technology in the world, the nation is currently grappling with a paradoxical decline in reproductive health outcomes. According to data discussed by the panel, the U.S. maintains one of the highest rates of preterm birth among developed nations, with specific regions, such as Jackson County, Mississippi, seeing rates that exceed those of developing countries.

This crisis is further exacerbated by a "feed-forward" cycle of non-communicable diseases. Dr. Leslie Stone noted that chronic hypertension in pregnancy has nearly doubled over the last 15 years. This trend creates a dangerous trajectory: a mother with hypertension is more likely to deliver a preterm or small-for-gestational-age (SGA) infant. That child, in turn, enters adulthood with a significantly higher predisposition for cardiovascular issues. Research indicates that a female fetus exposed to hypertensive disorders in utero faces a 70% increased risk of developing similar disorders during her own future pregnancy, and a 90% increased risk of preeclampsia.

Redefining Infertility: The Metabolic Connection

As infertility rates rise globally, Dr. Kalea Wattles, founder of Functional Fertility, argues that the "unexplained" label given to 15% to 30% of struggling couples is often a failure of deep-tier screening. From a functional medicine perspective, infertility is frequently a symptom of systemic metabolic dysfunction rather than an isolated reproductive failure.

A primary driver identified in this space is hyperinsulinemia. Even in patients who do not meet the criteria for Type 2 diabetes, elevated insulin can trigger the theca cells in the ovaries to overproduce testosterone. This androgen excess disrupts the delicate process of folliculogenesis (egg development). Simultaneously, insulin upregulates the aromatase enzyme, leading to a state of estrogen dominance that contributes to fibroids and endometriosis.

Dr. Wattles’ work emphasizes that the 90 to 120 days prior to conception—the window of oocyte maturation—is a critical period where lifestyle interventions can "set the scene" for a healthy pregnancy. By addressing markers such as high-sensitivity C-reactive protein (hsCRP), fasting insulin, and uric acid, clinicians can mitigate the "hostile environment" that often prevents successful implantation or leads to early pregnancy loss.

The Grow Baby Model: From Clinical Practice to Public Health

The Grow Baby program, co-founded by Dr. Leslie Stone and Emily Stone Rydbom, represents one of the most successful applications of functional medicine in an obstetric setting. Developed over decades of family practice, the model shifts the focus from reactive acute care to proactive resilience building.

The efficacy of this model was first demonstrated in a clinical cohort in Oregon. While the national preterm birth rate hovers around 10.4%, the Grow Baby cohort achieved a rate of zero percent in its initial study and approximately 2% in expanded groups—a reduction of nearly 80%. Similar dramatic reductions were seen in gestational diabetes (GDM) and hypertensive disorders.

A key differentiator of the Grow Baby approach is its focus on the "F1 generation"—the children born to these optimized pregnancies. Longitudinal follow-ups over seven years revealed that out of 400 births, only one case of autism was reported, a rate significantly lower than the California average of one in 33. Furthermore, the children showed less than a 1% incidence of atopy, eczema, and common childhood allergies, suggesting that maternal intervention during the "epigenetic window" creates a higher set point for immune and neurological resilience.

Chronology of Implementation and the ROOT Study

The evolution of this work has moved from a localized clinic in Oregon to a large-scale, state-funded research initiative. The timeline of this progression highlights a shift in how insurance providers view preventative care:

1. Phase I: Private Practice Refinement (Oregon): Dr. Stone began integrating micronutrient testing and genomic analysis into standard OB-GYN care, achieving unprecedented reductions in birth complications.
2. Phase II: Demographic Replication (Nevada): In partnership with Molina Healthcare, the program was tested in a 100% Medicaid, multi-ethnic population. The results mirrored the Oregon data, proving that the intervention was effective regardless of socioeconomic status or ethnicity.
3. Phase III: Technology Integration: To solve the problem of scalability, the team developed "Grow Health," an AI-assisted technology platform that allows for personalized nutritional counseling and lab monitoring without increasing the time burden on primary obstetricians.
4. Phase IV: The ROOT Study (North Carolina): Currently underway, this 500-pregnancy study is funded by Managed Care Organizations (MCOs) using Department of Health and Human Services dollars. It represents a landmark moment where taxpayer money is being used to fund functional medicine as a primary prevention strategy for vulnerable populations.

Precision Nutrition and the Epigenetic "Imprintome"

Central to the discussion of preconception health is the concept of the "imprintome." Published in Frontiers by a team including Dr. Randy Jirtle and Emily Stone Rydbom, the study of the imprintome explores how certain genes are silenced or activated based on the parent of origin. This biological "programming" occurs in a very narrow window—largely within the first eight weeks of development.

This process is highly dependent on one-carbon metabolism and methylation. If the mother lacks the necessary methyl donors (such as folate, B12, and choline) or is exposed to high levels of oxidative stress, the "instructions" for the baby’s growth and neurodevelopment can be altered. The Grow Baby program addresses this through a trimester-by-trimester food plan that emphasizes phytochemical diversity and a specific macronutrient balance (40% carbohydrates, 30% protein, and 30% fat).

Importantly, the panel stressed that over 90% of pregnant women are deficient in critical nutrients like choline and DHA by the third trimester. By the time many women seek prenatal care, the most sensitive epigenetic windows have already closed. This underscores the necessity of moving the "preconception" conversation back to puberty, treating every individual of reproductive age as a potential "pre-parent."

Broader Implications: Longevity and the Hallmarks of Aging

The implications of this research extend far beyond the delivery room. The panel drew a direct line between developmental origins and the "Hallmarks of Aging." The same biological systems that govern healthy fetal growth—mitochondrial function, intestinal barrier integrity, and DNA methylation—are the same systems that determine healthspan in later life.

Dr. Fitzgerald noted that the use of biological age clocks is beginning to show that the "weathering" of a mother’s system during a high-stress, nutrient-depleted pregnancy may accelerate her own aging process while simultaneously pre-programming the infant for earlier onset of age-related diseases. Conversely, the functional medicine interventions used to optimize fertility, such as stabilizing blood sugar and reducing systemic inflammation, serve as a foundational "longevity protocol" for both mother and child.

Conclusion: A New Standard for Preventative Medicine

The work of Dr. Stone, Emily Stone Rydbom, and Dr. Wattles serves as a call to action for the broader medical community to stop treating pregnancy as an isolated event. By the time a woman enters the healthcare system with a positive pregnancy test, significant biological "decisions" have already been made by her body’s epigenetic machinery.

As the ROOT Study progresses in North Carolina, the healthcare industry will be watching closely. If the data continues to show that a few hundred dollars of targeted nutrition and functional screening can prevent the six-figure costs of a NICU stay or the lifelong costs of managing chronic hypertension and diabetes, it may signal a permanent shift in how insurance companies and governments allocate healthcare resources. In the words of the panel, preconception care is not just about making babies; it is about "intergenerational medicine" that has the power to change the health trajectory of the human race.