Mother-child bonding is rooted in the affective dimension of the mother-infant relationship (
1), which is shaped during pregnancy and leads to the mental growth and development of infants (
2). Mother-child bonding is influenced by different factors, which are as follow: infant-related factors including delayed birth, breastfeeding, physical problems, and restlessness; parental factors including attachment style, physical ailments, postpartum depression, and social support networks; and maternal mental health problems (
3,
4).
Mother-child bonding leads to a mother’s gentleness, warmth, concern, and care about her child’s health and it is characterized by maternal behavior, such as looking at, touching, smiling, and talking with the child (
5). In fact, mother-child bonding facilitates children’s mental, affective, and social health (
6,
7). However, possible disruptions in the formation of this bond will affect children’s development and result in the appearance of complications, such as psychosocial disorders, avoidant personality disorder, separation anxiety disorder, failure to thrive, criminal activity, and/or borderline IQ (
8,
9).
In the postpartum period, mothers experience several physiological and psychological changes, which sometimes lead to mental disorders. These postpartum mental disorders cause difficulties for the baby, the mother, and other family members. Also, postpartum depression can be a threat to the health and safety of the mother, the baby, and other family members (
10-
12). Indeed, postpartum depression is an important mood disorder that is the cause of 12.5% of hospital admissions in women (
13,
14). Various factors, such as the instruments used to assess depression, sample size, and cultural background, affect the prevalence of postpartum depression, but the general prevalence of this disorder has been reported to be high in several studies (
14,
15). Anxiety is another common postpartum mood disorder, which is experienced by 20% to 15% of young mothers. If this disorder persists, it can exacerbate the risk of postpartum depression (
16-
18).
The results of several previous studies have shown that maternal postpartum depression has adverse effects on mother-child bonding and relationships (
19). Previous research on the effect of depression in pregnant women has been mainly conducted in relation to mothers’ demographic factors or other variables, such as unintended or intended pregnancy and gender of newborns (
14), type of delivery (
20), impact of anemia on depression (
21), gestational diabetes (
22), diet (
23), and social support (
24). Thus, research on the relationship between mother-child bonding and mental health has become more important than ever. Only 2 studies have been performed in Iran on the relationship between mother-child bonding and mental health. In one of these studies, only maternal depression was investigated. Galeshi et al. (2016) assessed maternal depression in Tabriz (
25) and Aflakseir and Jamali assessed maternal depression and anxiety in Shiraz (
19).