| CpG | cytosine-phosphate-guanine |
| CpGs | cytosine-phosphate-guanine sites |
| DNA | Deoxyribonucleic acid |
| DNAm | DNA methylation |
| EEAA | cell-extrinsic epigenetic age acceleration |
| IEAA | cell-intrinsic epigenetic age acceleration |
| PCR | Polymerase chain reaction |
| rLTL | Relative leukocyte telomere length |
| SNuPE | Single nucleotide polymorphism extension |