Mediterranean diet shows mechanisms
A USC Leonard Davis School study links the Mediterranean diet to slower aging and lower disease risk by altering specific cellular proteins — giving a molecular explanation for long-observed longevity benefits. Harvard’s recent event ‘Mediterranean and Greek Diet: From Research to Plate’ reinforced those findings for both clinicians and cooks. ( )
The paper, titled “Mediterranean diet adherence is associated with mitochondrial microproteins Humanin and SHMOOSE; potential role of the Humanin–Nox2 interaction in cardioprotection,” appeared in Frontiers in Nutrition on March 9, 2026 (DOI 10.3389/fnut.2025.1727012) and lists Roberto Vicinanza as first author and Pinchas Cohen as senior author. (frontiersin.org)) Researchers performed a cross‑sectional analysis of 49 patients (mean age 78.4 ± 8.7 years; 57% female) drawn from an observational non‑valvular atrial fibrillation cohort at Sapienza University’s Atherothrombosis Center in Rome. (frontiersin.org)) The study split participants by a 9‑item Mediterranean‑diet score, finding 20 patients (40.8%) classified as high adherence and 29 as low–medium adherence, with higher plasma Humanin (p = 0.045) and SHMOOSE (p = 0.046) in the high‑adherence group. (frontiersin.org)) Specific food components tied to the microproteins included olive oil (positive correlation with both Humanin and SHMOOSE, Humanin p = 0.0069), fish (Humanin p = 0.038), legumes (Humanin p = 0.0282) and low intake of refined bread (SHMOOSE p = 0.029). (frontiersin.org)) The team measured oxidative‑stress markers (soluble Nox2‑derived peptide and plasma 8‑iso‑prostaglandin F2α) by ELISA and reported an inverse association between Humanin and sNox2‑dp (p = 0.019), which remained significant after adjusting for sex and BMI (B = −0.010; β = −0.302; p = 0.040). (frontiersin.org)) Humanin and SHMOOSE were quantified using an in‑house sandwich ELISA, a methodological detail the authors note when proposing these microproteins as potential molecular biomarkers of Mediterranean‑diet adherence. (frontiersin.org)) Harvard’s March 17 event “Mediterranean and Greek Diet: From Research to Plate,” hosted by Harvard University Dining Services and the Harvard T.H. Chan School of Public Health, featured speakers including Smitha Haneef, Stefanos Kales and Demetrios Kalaitzidakis and concluded with a culinary tasting aimed at translating research findings into campus dining practices. (news.harvard.edu))
