Examined the influence of individual views of aging on health changes in later life. It was hypothesized that aging-related cognitions affect health changes irrespective of control beliefs and that the impact of aging-related cognitions on health is higher than for the reverse direction of causality. Analyses were based on data from the longitudinal part of the German Aging Survey (N = 1,286; participants were 40-85 years of age at baseline). Because of the selectivity of the sample, the authors also computed the same analyses for the baseline sample (N = 4,034) with estimated Time-2 data for those individuals who dropped out. The results of structural equation modeling were concordant with the hypotheses. They corroborate previous findings on the importance of beliefs about aging.