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  Deciphering molecular mysteries: New insights into metabolites that control aging and disease   In a groundbreaking study recently published in "Nature Chemical Biology," researchers have uncovered novel insights into acylspermidine, a family of metabolites that could potentially reshape our understanding of aging and immunity. The study, led by Dr. Frank Schroeder of Cornell University, uncovered an unexpected and significant connection between spermidine, a ubiquitous compound found in all cells, and sirtuins, an important enzyme family known to regulate basic life processes.   Sirtuins, particularly their dependence on nicotinamide adenine dinucleotide (NAD+), have been the subject of intense scientific interest for more than two decades. Involved in various age-related diseases, they are seen as promising targets for therapeutic interventions aimed at increasing longevity and overall health. The study explores the complex relationship between sirtuins and sper...