GDF15 and dementia: Among GS older adults with DNAm GDF15 data (n = 7690; M age: 60.5 [7.2 SD]; 58.0% female; median time‐to‐event = 9.17 years; 208 dementia cases), DNAm GDF15 was unrelated to dementia risk (HR: 1.07; 95% CI: 0.91–1.25; p = 0.42) after age and sex adjustment.