Lipidomics datasets profiling cholesterol, sphingolipid, and phospholipid composition of synaptic membranes and lipid rafts in aging and AD brains. Includes data from Fabelo et al. 2014 Frontiers in Physiology, the ADNI lipidomics substudy, and the Human Brain Proteome Project lipid fraction analyses. Referenced in lipid raft composition analyses of synaptic neurodegeneration.