Cancer has been defined as a disease in which cells proliferate without control and attacking nearby organs disrupts their function (
1). Breast cancer has profound effects on the various functions of patients as the most common cancer in women (
2). This type of cancer is a heterogeneous disease caused by the mutual influence of hereditary, individual, and genetic risk factors and hormonal and genetic predisposing factors (
3). In addition, breast cancer is one of the most common causes of death in women (
4). In Iran, this disease is regarded as the most common cancer among women, and approximately seven thousand women in Iran are affected by it yearly (
5,
6).
The most prominent problems in patients due to breast cancer include changes in body parts with surgery, hair loss, burns caused by radiation therapy, and decreased sexual attraction, which reduces the quality of life (
3,
7). Since the breast evokes femininity, attractiveness, and sexuality in women, having breast cancer has a tremendous negative effect on patients’ body image (
8).
People’s body image includes their understanding of physical appearance, attitude, and perception towards the beliefs about the body with multidimensional components consisting of cognitive, emotional, and behavioral elements (
9). In other words, body image is a mental evaluation of a person’s body and appearance, and having a good body leads to increased self-confidence in women (
10). Breast cancer diagnosis and treatment measures such as surgery, radiation therapy, chemotherapy, breast reconstruction, and mastectomy are related to women’s body image (
11). In the meantime, sexually active women suffer from many worries and preoccupations about their body image caused by treatment, weight gain or loss, and changes in the appearance and texture of the skin (
12,
13).
Women with cancer are often concerned about not being accepted and attracted by their husbands and other essential people. In addition, this concern leads to the fear of negative evaluation by others (
14,
15). Fear of negative evaluation and body dissatisfaction in women with breast cancer causes a decrease in self-esteem and withdrawal from society and social groups (
16). Worrying about negative evaluations by others increases dissatisfaction with body image, and continuing this dissatisfaction leads to depression and damage to self-esteem (
17).
There is a wide range of physical, cognitive, psychological, and social signs and symptoms resulting from the treatments used in breast cancer. Cognitive therapy based on mindfulness, as the third generation of cognitive behavioral therapy, was introduced by McMain et al. (
18) to prevent the recurrence of depression. This type of therapy is currently considered one of the most widely used treatments in psychology and is used to change consciousness to create new relationships with thoughts (
19). The main element of this treatment is exercises related to increasing awareness and based on the mind. In addition, the main focus of this therapeutic method is on awareness and attention to what is happening now (
20).
The prevalence of breast cancer and its debilitating consequences are increasing, causing adverse personal, family, and social effects in patients. Therefore, breast cancer patients should try to reduce the abovementioned injuries through different treatment methods. Currently, limited studies have been conducted on the role of third-generation therapy on body image variables, disease perception, and fear of disease recurrence in women with breast cancer (
18-
22), and it is necessary to conduct more studies.