The monograph "Belki molodosti i starosti" by Kuznik B.I., Havinson V.H., Davydov S.O., and Stepanov A.V. offers a comprehensive analysis of molecules considered markers for cellular aging. These markers, including Irisin, Betatrophin, and various growth factors, are examined in the context of their role in the pathogenesis of age-associated diseases such as Alzheimer’s, Parkinson’s, cancer, and cardiovascular diseases. The authors also highlight the epigenetic regulation of gene expression, which is crucial for understanding the aging processes. The monograph is aimed at professionals in medicine, molecular biology, and gerontology, as well as medical students, providing valuable insights into the mechanisms of aging and their impact on health.