TY - JOUR
T1 - Interactive Beliefs about Genes and Behavior Predict Improved Sun Protection Following Melanoma Genetic Counseling
AU - Aspinwall, Lisa G.
AU - Drummond, Danielle M.
AU - Stump, Tammy K.
AU - Kohlmann, Wendy K.
AU - Leachman, Sancy A.
N1 - Publisher Copyright:
© 2022 Society of Behavioral Medicine. All rights reserved.
PY - 2022/8/1
Y1 - 2022/8/1
N2 - Background: Little is known about how members of cancer-prone families think about genetic determinism and whether personal behavior can amplify or counter genetic risk for disease. Purpose: Understanding how people think about the impact of personal behavior on disease risk may inform communications about genetic risks and their management. Methods: We assessed three sets of beliefs about the impact of behavior on genetic risk - interactive (unhealthful behaviors can amplify genetic risk), subtractive (healthful behaviors can reduce genetic risk), and deterministic (genes primarily determine health outcomes) - among 114 unaffected members of melanoma-prone families receiving genetic counseling (51.6% men, average age = 35.3). We examined whether these beliefs predicted changes in perceived control, motivation to manage melanoma risk, and sun-protection behavior one year later. Results: Participants strongly endorsed interactive and subtractive beliefs, but not deterministic beliefs. These beliefs generally did not change, even among those who received positive CDKN2A/p16 genetic test results conferring up to 76% lifetime melanoma risk. Controlling for age, sex, education, skin type, and genetic test result, interactive beliefs predicted sustained increases in perceptions of personal control, motivation to reduce sun exposure, use of multiple sun-protection methods, and reduction in objectively assessed tanning at the wrist one year following genetic counseling. Subtractive beliefs predicted increased personal control, motivation to manage risk, and sunscreen use, while deterministic beliefs were generally unrelated to outcomes. Conclusions: Among people at highly elevated hereditary cancer risk, beliefs that unhealthful behaviors can amplify genetic risk seem to be especially motivating of behavioral risk-reduction efforts.
AB - Background: Little is known about how members of cancer-prone families think about genetic determinism and whether personal behavior can amplify or counter genetic risk for disease. Purpose: Understanding how people think about the impact of personal behavior on disease risk may inform communications about genetic risks and their management. Methods: We assessed three sets of beliefs about the impact of behavior on genetic risk - interactive (unhealthful behaviors can amplify genetic risk), subtractive (healthful behaviors can reduce genetic risk), and deterministic (genes primarily determine health outcomes) - among 114 unaffected members of melanoma-prone families receiving genetic counseling (51.6% men, average age = 35.3). We examined whether these beliefs predicted changes in perceived control, motivation to manage melanoma risk, and sun-protection behavior one year later. Results: Participants strongly endorsed interactive and subtractive beliefs, but not deterministic beliefs. These beliefs generally did not change, even among those who received positive CDKN2A/p16 genetic test results conferring up to 76% lifetime melanoma risk. Controlling for age, sex, education, skin type, and genetic test result, interactive beliefs predicted sustained increases in perceptions of personal control, motivation to reduce sun exposure, use of multiple sun-protection methods, and reduction in objectively assessed tanning at the wrist one year following genetic counseling. Subtractive beliefs predicted increased personal control, motivation to manage risk, and sunscreen use, while deterministic beliefs were generally unrelated to outcomes. Conclusions: Among people at highly elevated hereditary cancer risk, beliefs that unhealthful behaviors can amplify genetic risk seem to be especially motivating of behavioral risk-reduction efforts.
KW - Familial melanoma
KW - Gene-behavior interaction
KW - Genetic counseling
KW - Genetic determinism
KW - Perceived control
KW - Sun-protection behaviors
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U2 - 10.1093/abm/kaab117
DO - 10.1093/abm/kaab117
M3 - Article
C2 - 35179177
AN - SCOPUS:85135419134
SN - 0883-6612
VL - 56
SP - 816
EP - 829
JO - Annals of Behavioral Medicine
JF - Annals of Behavioral Medicine
IS - 8
ER -