Perceived cancer causes: use of complementary and alternative therapy

Area of Science:

• Oncology
• Medical Sociology
• Health Psychology

Background:

• Patient beliefs regarding cancer etiology significantly influence treatment decisions and adherence.
• Complementary and Alternative Medicine (CAM) use is prevalent among cancer patients, often driven by unique causal beliefs.
• Discrepancies between patient-held beliefs and scientific understanding of cancer causes can impact patient-physician communication.

Purpose of the Study:

• To describe patient beliefs about general and personal cancer causes.
• To compare these beliefs with established epidemiologic knowledge.
• To explore the relationship between these beliefs and the use of complementary and alternative medicine (CAM).

Main Methods:

• Semistructured interviews were conducted with 143 cancer patients.
• Patients were identified through the Hawaii Tumor Registry and prior CAM use surveys.
• Qualitative data analysis was employed to interpret interview responses.

Main Results:

• Genetics, environment, and diet were common general cancer cause beliefs.
• Psychosocial factors were the most frequently cited personal causes of cancer.
• CAM users were more likely to identify environmental, immune, and stress-related causes compared to non-users.
• Patients were less likely to cite tobacco use but more likely to cite environmental exposures, psychosocial factors, immunologic mechanisms, and physical injury than epidemiologic literature suggests.
• Causal beliefs appeared related to the type of CAM utilized.

Conclusions:

• A significant gap exists between popular cancer theories and scientific understanding.
• Healthcare providers must actively listen to and understand patient beliefs about cancer etiology.
• Understanding patient beliefs is vital for providing effective support and facilitating informed medical decisions.