Mind matters in cancer survival

Area of Science:

• Psycho-oncology
• Cancer biology
• Endocrinology

Background:

• Psycho-oncology explores the brain-body connection in cancer.
• A key question is whether improved quality of life impacts cancer survival.
• Disruption of circadian rhythms and the hypothalamic-pituitary-adrenal (HPA) axis is increasingly linked to cancer risk and progression.

Purpose of the Study:

• To review randomized intervention trials investigating the impact of psychological interventions on cancer survival.
• To explore the mechanisms underlying the relationship between psychological well-being, circadian rhythms, and cancer progression.

Main Methods:

• Review of randomized intervention trials.
• Analysis of studies examining circadian rhythm disruption (e.g., cortisol patterns) in cancer patients.
• Review of mechanisms linking stress, inflammation, and tumor growth.

Main Results:

• Most trials show a survival advantage for patients receiving psychologically effective interventions across various cancers.
• Supportive care interventions become more critical when anti-tumor treatments are less effective.
• Altered diurnal cortisol patterns and HPA axis hyperactivity are associated with poorer prognosis and increased mortality.
• Tumor cells can exploit inflammatory mediators and stress responses to promote metastasis and growth.

Conclusions:

• Psychological interventions can improve survival in cancer patients.
• The stress of cancer and its treatment disrupts endocrine, immune, and autonomic functions.
• These disruptions negatively impact the host's ability to resist cancer progression.