Unexplained Infertility: 6 Factors to Investigate with Dr. Jessica Christie
July 17, 2025·44 min·5 clips
Dr. Kate Kresge hosts Dr. Jessica Christie, a naturopathic doctor and integrative fertility specialist, to dissect the frustrating diagnosis of unexplained infertility. Dr. Christie argues this label, given to about 30% of infertile couples after standard tests return normal, often means causes simply haven't been found yet. She identifies six key areas for deeper investigation: subclinical hypothyroidism, autoimmunity, chronic inflammation, gut and vaginal dysbiosis, nutrient deficiencies, and environmental toxins.
Subclinical hypothyroidism involves a TSH level that is technically within range but high enough to impair ovulation and implantation. Thyroid antibodies, present in many reproductive-age women, can increase miscarriage risk even with normal thyroid function. Antiphospholipid antibody syndrome affects 8-9% of women with unexplained infertility, often leading to pregnancy loss rather than conception issues. Elevated inflammatory markers like IL-6 are common and linked to gut issues, stress, or diet. Dysbiosis, an imbalance in gut or vaginal bacteria, can cause inflammation and recurrent implantation failure, with conditions like bacterial vaginosis being asymptomatic in about 50% of cases. Key nutrient deficiencies to screen for include vitamin D, B12, folate, iron, selenium, and zinc, which are crucial for egg quality. Environmental toxins like BPA and phthalates act as endocrine disruptors, impacting both egg and sperm health.
A surprising insight is that a TSH level above 2.5, though below the standard hypothyroid cutoff of 4.5, may warrant treatment to improve pregnancy outcomes. Dr. Christie notes that even women with perfect diets can have nutrient deficiencies, especially after pregnancy and breastfeeding deplete reserves. She shares a case where a patient with celiac disease and a healthy diet had severe deficiencies corrected with liquid nutrients and gut healing, leading to pregnancy. For toxins, she emphasizes reduction over drastic detoxes, warning that intense cleanses can release stored toxins into the bloodstream when trying to conceive.
The conversation is educational and hopeful, providing actionable steps beyond standard fertility clinic protocols. The tone is collaborative and detailed, blending clinical research with practical patient stories. This episode is ideal for individuals or couples diagnosed with unexplained infertility who feel dismissed and seek a holistic, investigative approach. Listeners looking for a quick fix or solely conventional medical perspectives might find the depth of functional testing and lifestyle adjustments overwhelming.
