Optimism, pessimism and health biomarkers in older couples
Objective: Studies have demonstrated the importance of optimism to various health outcomes. However, fewer studies have focused on biological markers, and none have examined whether marital partners levels of optimism and pessimism affect each other's biological markers. Thus, our objectives were to examine whether one's partners optimism and pessimism affect own biological markers. Methods: Three waves of the Health and Retirement Study collected in 2006, 2010 and 2014 were used to test own and partner’s effect on CRP, HDL and Hba1c. Actor-Partner models were used to examine the contribution of partner’s optimism and pessimism on health. Multilevel modeling (MLM) was used to adjust for the interdependence of individuals within dyads. In a series of nine models we tested the separate contribution of pessimism and optimism to each biomarker, within each wave. All models were adjusted for respondent's age, sex and a summary score of respondent's doctor-diagnosed chronic conditions. Results: Partners’ pessimism ad optimism levels were moderately associated. Own and partner’s pessimism, but not optimism, showed significant associations with s partners’ health biomarkers levels. However, effects were not robust and occured primarily at the first assessment waves, when partners were in their early 60s. Conclusion: While optimism seems to have no effect, own and partner's pessimism affects biological markers. Interventions aimed at facilitating healthier life in older adulthood could aim at decreasing pessimism and taking a dyadic approach addressing both partners in a marital relationship.