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The short answer on anxiety after a breast cancer diagnosis
The National Cancer Institute (NCI) says most people with cancer "do not meet the diagnostic criteria for any specific mental disorder. However, many do experience a variety of difficult emotional responses." A 2026 review of 32 studies, covering 21,507 people with breast cancer, found that "the pooled prevalence of anxiety was 35%" and "that of depression was 26%."
What the research says, in brief
- It's common. In a study of 236 women newly diagnosed with breast cancer, 41% reported distress scores higher than 5 on a 0-to-10 scale, according to the NCI.
- It comes at certain moments. The NCI says anxiety "often appears at various times during cancer screening, diagnosis, treatment, and recurrence."
- It can affect what you take in. Heightened distress can affect "attention and cognitive processing," the NCI says, so "communication with patients about their cancer diagnosis may be impaired."
- Money came up again and again. Three of the studies below found links between financial strain and more anxiety or depression.
What did women in one study say anxiety felt like?
Researchers in Cyprus surveyed 355 women who had just finished their first cycle of chemotherapy and interviewed 12 of them. Three themes came out of the interviews: "Life is Not the Same Anymore," "Feeling trapped in my thoughts" and "Live in the Moment." The researchers wrote that feeling trapped in worrying thoughts "was a common experience among all the participants."
What does the National Cancer Institute say about distress after a cancer diagnosis?
The NCI uses a definition of distress that extends "along a continuum, ranging from common normal feelings of vulnerability, sadness, and fears to problems that can become disabling, such as depression, anxiety, panic, social isolation, and existential and spiritual crisis."
For people in treatment, the NCI says anxiety "may also heighten the expectancy of pain, other symptoms of distress, and sleep disturbances, and it can be a major factor in anticipatory nausea and vomiting." It adds: "Regardless of severity, anxiety can substantially interfere with the quality of life of cancer patients and their families, and should be evaluated and treated."
How common is anxiety after a breast cancer diagnosis?
According to the NCI, "pooled results from multiple studies suggest that approximately 40% of cancer patients report significant distress." In one study of 236 women newly diagnosed with breast cancer, who were still waiting for their first visit with a surgical oncologist, "41% reported distress scores higher than 5" on the Distress Thermometer. "In this same group of women, 11% reported symptoms suggestive of major depression, and 10% reported symptoms of post-traumatic stress."
The 2026 meta-analysis of 32 studies found anxiety in 35% and depression in 26% of people with breast cancer. A second 2026 review, of 60 studies, concluded that "anxiety, depression, and stress are common mental health indicators" in women with breast cancer. In a 2025 study of 283 women in Mazandaran, Iran, "depression, anxiety, and stress prevalence were high (46.6%, 56.9%, and 51.9%, respectively)."
When does anxiety during breast cancer treatment tend to rise?
The NCI lists these as "common periods of crisis and significant challenges": initial diagnosis, active treatment, posttreatment and remission, recurrence, terminating curative treatment, and long-term survivorship. It also says that "the completion of active treatment can be a time of heightened distress, with a renewed sense of vulnerability."
A 2012 review reported that "the anxiety level in women who underwent chemotherapy was highest before the first chemotherapy infusion."
A 2025 study followed 211 women in Poland from one week before chemotherapy to three weeks after it. The authors reported that "after chemotherapy, anxiety and depression levels increased significantly. Nearly half of the patients experienced clinically relevant anxiety, and over one-third showed symptoms of depression." The study's title notes that it had no control group.
Which women did researchers find were more likely to struggle?
In the 2026 meta-analysis, "low income was a risk factor" for anxiety, and a high score on an optimism scale was protective. For depression, the authors found that "protective factors included older age, higher income, early tumor stage, and a high LOT-R score," a measure of optimism. "Risk factors were low education, rural residence, disrupted marital status, comorbidities, lack of social support, and a history of mental illness."
In the Polish study, "the emotional burden appeared particularly high among women reporting financial difficulties." The Iran study linked "inadequate income" and "mastectomy" (compared with breast-conserving surgery) to higher depression and stress.
What did researchers find helped?
A stress management group. The NCI describes a trial of 100 women newly treated for breast cancer who joined ten weekly, two-hour group sessions in cognitive-behavioral stress management. "Among intervention participants, results showed a decrease in depression and an increase in benefit-finding" and optimism. In a larger study of 199 women, "a similar intervention produced somewhat greater sustained decreases in cancer-related intrusive thoughts and sustained improvements in anxiety."
Mindfulness. In an NCI-described trial of a six-week mindfulness-based stress reduction course for women who had finished breast cancer treatment, "participants who practiced more frequently showed greater improvements," and everyone in the course improved on measures including "fear of recurrence," anxiety and depression. In a second trial of 322 women, those who took the course improved in "anxiety, fear of recurrence overall, and fear of recurrence symptoms," and "the survivors with the highest baseline stress experienced the greatest benefit."
Exercise with counseling. The NCI describes a three-month program that combined supervised exercise with counseling, which "had a significant positive impact on body image, mood, cardiovascular fitness, and general quality of life."
Support. The 2012 review cited research finding that "benefiting from social support results in a marked reduction in the levels of anxiety and depression."
More help when it's needed. The NCI says that "such symptoms of distress often are resolved with psychological support alone; however, in some cases, pharmacological interventions are required."
The authors of the Polish study wrote that "routine psychological assessment and psycho-oncological support should be implemented as integral components of oncological care."
When to get help now
"If you feel distressed, don't wait," says the American Cancer Society. Its list of symptoms of mental distress includes feeling sad or hopeless most of the time, being more irritable than usual, losing interest in people or things, and nightmares, flashbacks or intrusive thoughts.
The American Cancer Society directs anyone wishing for death or thinking about suicide to call or text 988, the Suicide & Crisis Lifeline, or to call 911 or go to an emergency department. CancerCare's oncology social workers offer "free emotional and practical support" at 800-813-HOPE (4673).
Questions to ask your care team about stress and anxiety
- Do you screen patients for distress here? What happens if my score is high?
- Is there a social worker or counselor on my care team?
- Do you offer a support group or a stress management or mindfulness program, in person or online?
- Who can I talk to about the cost of my treatment?
Sources: PDQ Supportive and Palliative Care Editorial Board, Adjustment to Cancer: Anxiety and Distress (PDQ), Health Professional Version, National Cancer Institute, updated February 27, 2025; American Cancer Society, What Is Distress?; CancerCare, Patients and Survivors; Qing H and Ye L, Prevalence and Influencing Factors of Anxiety and Depression in Patients With Breast Cancer: A Meta-Analysis, Actas Españolas de Psiquiatría, 2026; Halemani K et al., Global prevalence of anxiety, depression and stress in women with breast cancer: A systematic review and meta-analysis, Journal of Affective Disorders, 2026; Konieczny M et al., Anxiety and Depression in Breast Cancer Patients Before and After Chemotherapy: A Pre–Post Study Without a Control Group, Journal of Clinical Medicine, 2025; Hessami A et al., Depression, anxiety, and stress in breast cancer patients: prevalence, associated risk factors, and clinical correlates, Scientific Reports, 2025; Charalambous A et al., The effects on anxiety and quality of life of breast cancer patients following completion of the first cycle of chemotherapy, SAGE Open Medicine, 2017; Baqutayan SMS, The Effect of Anxiety on Breast Cancer Patients, Indian Journal of Psychological Medicine, 2012. Quotations are from the sources listed. This article is general information and is not a substitute for advice from your care team or a mental health professional.