Iodine is a vital trace mineral that often goes unnoticed, yet it plays a crucial role in many areas of women’s health beyond just supporting the thyroid. While it’s well-known that iodine is required for the production of thyroid hormones—which regulate metabolism, energy, and weight—it also deeply impacts the nervous system, mood, reproductive health, and general immunity.
For women, adequate iodine supports the nervous system by ensuring proper brain function and cognitive clarity. Iodine is essential during pregnancy and breastfeeding for fetal brain development, but even outside of pregnancy, it helps regulate mood and reduce feelings of brain fog or anxiety.
Ovarian health is another key area influenced by iodine. The ovaries have a high concentration of iodine, and deficiency may contribute to menstrual irregularities, fibrocystic breast changes, and reduced fertility. Research suggests iodine helps regulate estrogen metabolism, which is vital for overall hormonal balance.
Healthy hair, skin, and nails also rely on iodine. Deficiency can lead to dry skin, brittle hair, and hair thinning, as iodine plays a role in cellular regeneration and protein synthesis.
When it comes to energy and immune support, iodine boosts mitochondrial function—the energy factories in your cells—and supports white blood cell activity, helping the body defend against pathogens.
Mood stability can be greatly affected by iodine status. Deficiency has been linked to depressive symptoms, likely due to impaired thyroid function and disrupted neurotransmitter balance.
Top Iodine-Rich Foods & Serving Sizes:
- Seaweed (kelp, nori, wakame): 1 sheet = 16–2,984 mcg
- Cod (baked): 3 oz = 99 mcg
- Greek Yogurt (plain): 1 cup = 75 mcg
- Eggs (whole): 1 large = 24 mcg
- Iodized salt: ¼ tsp = 71 mcg
Generally, we want to aim for 150 mcg/day (non-pregnant adults), however too much iodine can be a very bad thing – we always want to consult a healthcare provider before supplementing, and ideally that practitioner will test prior to supplementation to avoid over consumption.