Aging is never a single process, but a systemic change involving cells, tissues and metabolism throughout the body. In May 2026, good news kept pouring in from the global anti-aging field. Researchers unlocked brand-new codes for delaying biological aging from multiple dimensions, including natural ingredients, gut microbiota, organelle function and nutritional metabolism. These studies not only deepen our understanding of aging mechanisms, but also provide scientifically feasible directions for ordinary people's anti-aging practices.
I. Higher Plasma Glycine Levels Correlate with Slower Aging
The link between amino acid metabolism and aging has gradually become a hot spot in anti-aging research in recent years. Recently, a team from Harbin Medical University published a study in Free Radical Biology and Medicine, which systematically revealed for the first time the molecular mechanism by which plasma glycine delays biological aging.
The study found that the concentration of glycine in human circulation is significantly negatively correlated with the rate of biological aging: the higher the glycine level, the younger the biological age. This correlation mainly stems from the precise regulation of glycine on the "redox-inflammation axis" — it can inhibit systemic inflammatory responses while improving the cellular redox state.
Notably, the researchers also identified gender differences: pro-inflammatory and pro-oxidative dietary patterns only alter the association between glycine and aging in male populations, and no similar interaction was observed in the total population or female populations. This finding also provides an important basis for the development of personalized anti-aging regimens in the future.
II. AKK Bacteria Supplementation Reduces Weight Regain Risk by Over 60%
"Losing 10 pounds with great effort, only to regain 8 pounds accidentally" is a pain point for countless people trying to lose weight. A randomized controlled trial published in Nature Medicine on May 13 brought a revolutionary solution to long-term weight management.
The study enrolled 90 overweight or obese adults. All subjects first received an 8-week standardized low-energy meal replacement intervention, and 84 of them successfully met the target with an average weight loss of 11.0 kg. Then they entered a 24-week free-diet maintenance phase and were randomly divided into two groups: one group took 3×10¹⁰ CFU of pasteurized Akkermansia muciniphila (AKK bacteria) daily, and the other group took a placebo.
The final data showed a striking difference: the average weight regain in the AKK bacteria group was only 1.2 kg, compared with 3.2 kg in the placebo group. Even more surprisingly, 40% of the subjects in the AKK bacteria group not only did not regain weight during the maintenance phase, but achieved further weight loss. This means that supplementation with pasteurized AKK bacteria can reduce the risk of weight regain after weight loss by more than 60%.
Reference: Mount, S., Canfora, E.E., Jocken, J.W. et al. Pasteurized Akkermansia muciniphila MucT for weight loss maintenance in people with overweight and obesity: a controlled randomized trial. Nat Med (2026). https://doi.org/10.1038/s41591-026-04394-7
III. Fisetin in Strawberries Clears 50% of Senescent Cells and Protects Blood Vessels
Vascular aging is the "trigger" for the aging of all organs in the body, and clearing accumulated senescent cells in the body is one of the core ideas to improve vascular function.
The latest study published by a team from the University of Colorado in Aging Cell, a top journal in the aging field, has found a natural senolytic agent — fisetin. This flavonoid is widely present in daily fruits such as strawberries, apples and grapes, and can be ingested through diet without complex extraction.
Researchers induced senescence in human aortic endothelial cells with doxorubicin and then intervened with different concentrations of fisetin. The results showed that fisetin at a concentration of only 1.0 μM reduced the cellular senescence burden by approximately 50% compared with doxorubicin alone. Animal experiments further confirmed that fisetin supplementation can effectively alleviate doxorubicin-induced aortic stiffness and significantly improve vascular diastolic and systolic functions by clearing excess senescent cells.
IV. The Core of Caloric Restriction's Lifespan Extension Lies in This Organelle
Caloric restriction is currently a widely proven lifespan-extending method, but how it works has long been an unsolved mystery in the scientific community. On May 20, a team from the Harvard T.H. Chan School of Public Health published a study in Nature Aging, finally identifying the key target of this mechanism — peroxisomes.
Through multi-omics analysis, the researchers found that aging specifically impairs peroxisome function, and this impairment directly leads to a decline in the metabolic resilience of organisms. More critically, if the protein import function of peroxisomes is defective, all the longevity effects brought by caloric restriction will be completely blocked. Conversely, overexpressing the PRX-5 protein to improve peroxisome homeostasis can significantly extend the lifespan of organisms.
In addition, the study confirmed that caloric restriction exerts its lifespan-extending effect precisely because it can continuously maintain peroxisome pathway activity and the synergy between organelles, and this protective effect can even last into old age.
From a strawberry on the dining table to a bacterium in the gut, and then to an organelle inside the cell, anti-aging science is cracking the time code of life from an increasingly detailed perspective. These latest studies in May not only show us more possibilities of scientific anti-aging, but also remind us that a healthy lifestyle and scientific nutritional intervention are always the most basic and effective means to delay aging. In the future, with the translation of more research results, we are expected to usher in a more precise and safe anti-aging era.