Introduction: Iodine is a human body essential element, which exists in various chemical forms, of which iodide, iodine, and elemental iodine are outstanding, existing in constant amounts in saltwater. Methods: It was an observational cross-sectional study, where 37 pregnant women attended under low-risk and high-risk prenatal care were studied from October 2016 to July 2018, attended by the Obstetrics Service of the Barbacena Medicine College and a private clinic in the city of Juiz de Fora. Exclusion criteria were incomplete records and refusal to participate in the study or urine inadequate collection. Results: We studied 37 patients with an average of 1.5 ± 0.84 gestations, 0.45 ± 0.62 births and 0.15 ± 0.84 abortions. The mean age of the patients was 32.1 ± 7.2 years. Due to the consumption of salt, milk, and fish, there was an association between urinary iodine significant (p < 0,05). Conclusion: It should be noted that the present study concluded that it is important to take into account the eating habits of these patients.