According to years lived with disability, depression is the second most prevalent yet highly debilitating psychiatric condition globally [1]. It carries significant individual and socioeconomic burdens, and is associated with increased morbidity and mortality [2]. Trend analyses indicate a growing prevalence, highlighting the expanding global public health burden. Despite advancements in medication and increased understanding of biological, clinical, and imaging aspects, clinical outcomes remain diverse and dependent on both the patient and treatment approach [3].

Anxiety, characterized by distress, impending danger, and fear, constitutes the core components of this condition. When anxiety is triggered by an actual, objective factor, it is considered physiological. Pathological anxiety, on the other hand, lacks valid reasons for its persistence [4]. While anxiety can be a normal psychological response to the onset of a physical illness, it can also escalate into a symptom with pathological significance or even develop into a mental disorder. Indeed, individuals dealing with medical illnesses often experience heightened levels of anxiety [5], with generalized anxiety disorder being the most common disorder encountered in primary care settings (10.3%) [6]. Anxiety can influence patient interactions, particularly with medical and nursing staff, and influence their perception of the disease process.

The perinatal use of folic acid supplements reduces the occurrence and recurrence of initial neural tube defects [7]. In communities where poor pregnancy outcomes are linked to inadequate dietary intake of folic acid and other vitamins and minerals, continued folate consumption post-neural tube closure may be necessary to mitigate further negative pregnancy outcomes [8]. Folate is pivotal for embryogenesis and embryonic development due to its role in DNA synthesis, a process crucial for cell division proliferation [9]. Inadequate dietary folate intake or increased metabolic requirements due to specific genetic anomalies can both lead to folic acid deficiency [10]. Lower circulating folic acid levels during pregnancy are associated with heightened risks of preterm birth, low birth weight, and delayed fetal growth. Folic acid deficiency leads to elevated blood homocysteine levels, which have been linked to habitual spontaneous abortion and pregnancy complications like placental abruption and pre-eclampsia, thereby increasing the risk of adverse pregnancy outcomes, low birth weight, and gestational term [11, 12]. Folic acid metabolism anomalies can lead to pregnancy delays and complications, highlighting the significance of proper folate intake during pregnancy [13].

The aim of this study is to investigate the relationship between anxiety disorders and depression with the use of folic acid during the first trimester of pregnancy.

This study employs a retrospective cohort design in the center and south of Iraq. From September to December 2022, a cross-sectional survey-based study was conducted to examine the prevalence of sadness and anxiety among women who experienced childbirth during the first trimester while utilizing various folic acid prescriptions.

Instruments and Measurements

A questionnaire consisting of three parts was administered to gather face-to-face information from the participants. The first segment of the survey focused on background demographic information, including age, level of education, chronic diseases, number of live children, and folic acid tablet usage methods. The second component utilized the Generalized Anxiety Disorder (GAD-7) scale and the Patient Health Questionnaire (PHQ)-9, both of which have been validated [14]. GAD-7 comprises seven items and a 4-point Likert scale. Each item is assigned a score ranging from 0 to 3, yielding a total score that can range from 0 to 21. Scores of 5 to 9 represent mild anxiety, 10 to 14 indicate moderate anxiety, and 15 to 21 signify severe anxiety. PHQ-9 is a 9-item assessment with a 4-point Likert scale. The total score varies from 0 to 27, with each item being assigned a value between 0 and 3. Scores of 0-4 suggest minimal depression, 5-9 imply mild depression, 10-14 indicate moderate depression, 15-19 represent moderately severe depression, and 20-27 correspond to severe depression.

Statistical Analysis

The sample size was determined using the formula: sample size = \(Z_{1-\alpha/2}^2 \times P(1 - P)/d^2\), ensuring 80% power and a 95% confidence interval. The statistical package for social sciences (SPSS\(\circledR\) version 26, IBM Inc., Chicago, IL, USA) was employed for data analysis. Numerical variables were expressed using mean and standard deviation. When the Kolmogorov-Smirnov test indicated a non-normal distribution, the Kruskal-Wallis test was used to assess mean differences between groups. Bivariate correlation analysis was conducted to explore the relationship between clinical factors and folic acid or vitamin B12 levels. Statistical significance was determined at \(P < 0.05\).

Participants’ General Features

A total of 500 pregnant women were included in this study. The results indicated a highly significant difference ( \(p < 0.05\) ) in the age distribution of participants, with 53.4% ( \(SD = 0.81\) ) falling within the 20-29 years age range. Similarly, a significant difference ( \(p < 0.05\) ) was observed in the distribution of educational levels, with 52.6% ( \(SD = 1.0\) ) of participants having a university education. Conversely, 67.6% ( \(SD = 0.56\) ) of participants did not use folic acid during pregnancy, which was highly significant ( \(p < 0.05\) ) compared to other usage patterns. Among the mothers, more than 65% experienced severe anxiety based on the assessment, while 43.0% suffered from moderately severe depression (Table 1).

Relationship between Participant Features and Use of Folic Acid

In terms of age, 338 (67.6%) of the pregnant women did not use folic acid, which was found to be highly significant ( \(p < 0.05\) ) compared to regular use by 21 (4.2%) and irregular use by 141 (28.2%) of participants. Among them, 267 (53.4%) were in the age range of 20-29 years old, and 183 (36.6%) were aged 30-39 years. Regarding education, a significant difference ( \(p < 0.05\) ) was observed between women who did not use folic acid (170, 34.0%) and those who irregularly used it (18, 3.6%), as well as those who used it regularly (75, 15.0%). Furthermore, based on the number of children, 235 (47.0%) of the pregnant women had more than two children, and among them, 157 (31.4%) did not use folic acid (Table 2 and Figure 1).

Correlation between Anxiety and Folic Acid Use

Our findings revealed a negative correlation between the use of folic acid and the incidence of both anxiety ( \(r = -0.642\) ) and depression ( \(r = -0.244\) ). Furthermore, we identified a significant correlation ( \(p < 0.05\) ) between the use of folic acid and anxiety, as well as a significant difference ( \(p < 0.05\) ) in folic acid use with respect to depression (see Table 3 and Figures 2 and 3).