Nutrition and Diet Library
Every article, presentation, spotlight, and news item we've tagged to Nutrition and Diet.
Showing 25–48 of 49
Muscle function, not protein intake, predicts healthy aging
Protein has become overemphasized as the primary lever for healthy aging, obscuring the more critical role of resistance exercise in maintaining muscle function, metabolic health, and quality of life. The conversation reveals how a single nutrient can dominate public discourse while more fundamental determinants of longevity—movement, metabolic capacity, and functional independence—receive insufficient attention.
Muscle Mass as Mortality Marker: Training for Longevity
Muscle mass and strength function as longevity biomarkers, with training stimulus and nutritional support directly influencing mortality risk across age groups. Optimization requires integrated approaches to movement patterns, protein synthesis, and recovery—not isolated interventions.
Protein Restriction Activates FGF21 Longevity Pathway
Moderate protein restriction activates fibroblast growth factor 21 (FGF21), improving metabolic efficiency and extending lifespan in animal models. This challenges prevailing high-protein recommendations for sedentary populations and suggests protein quantity requires context-specific calibration based on activity level and metabolic state.
Longevity Research July 2026: Mechanisms Advance, Clinical Translation Lags
July 2026 research advances span intermittent fasting, calcium homeostasis, thymic regeneration, and senolytic therapies in animal models, alongside policy discussions on physical activity guidelines and cautionary evidence from a fatal NAD⁺ infusion. The month illustrates both the promise and peril of experimental longevity interventions—mechanistic progress tempered by real-world safety failures and the gap between animal findings and clinical application.
Inflammatory Fidelity: Restoring Aging's Lost Immune Balance
Dr. José Pedro Castro's research centers on inflammatory fidelity—the maintenance of balanced inflammatory homeostasis that deteriorates with age. His systems-based approach reveals inflammation as both essential to healthy function and a key driver of aging pathology, positioning targeted inflammatory regulation as a therapeutic frontier for healthspan extension.
How to live a long and healthy life, according to the ancients
Ancient Greek and Roman physicians documented longevity patterns through detailed case studies, identifying consistent behavioral practices—meal frequency, diet composition, daily movement, and recovery protocols—that correlated with extended healthspan. These observations predate modern gerontology by nearly two millennia yet align substantively with contemporary longevity research.
Creatine and Muscle: The Overlooked Longevity Foundation
Elysium Health has launched Creatine+, a three-ingredient formulation combining creatine monohydrate, HMB, and pomegranate polyphenols designed to support muscle strength, recovery, and mitochondrial function across the lifespan. As longevity science shifts focus from lifespan extension to preservation of physical function, muscle health has emerged as a critical determinant of healthy aging, reframing creatine from a sports supplement to a foundational longevity tool.
Inflammation blocks intestinal stem cell energy metabolism
Chronic inflammation drives intestinal stem cell aging through a specific signaling pathway (TNFR1) that impairs the cells' ability to metabolize fat for energy. This connection is transferable between organisms via systemic circulation, positioning inflammatory control as a direct intervention point for preserving intestinal regenerative capacity.
#385 – AMA #82: Applying the tools of longevity in the real world: disease prevention, DEXA scans, artificial sweeteners, injury recovery, stability training, habit formation, protein intake and mTOR activation, and more
This AMA addresses practical applications of longevity science across disease prevention, body composition assessment, nutritional strategy, movement quality, and habit implementation. The focus is on translating evidence-based tools into sustained clinical and personal practice for extending both lifespan and healthspan.
Featured Cover
Adherence to sustainable dietary patterns moderates the accelerated biological aging associated with particulate matter exposure, suggesting that dietary quality can partially offset environmental pollutant burden at the cellular level. This finding indicates a modifiable pathway through which nutritional intervention may counteract oxidative stress and inflammatory cascades triggered by air pollution.
Valine Restriction Extends Male Lifespan in Mice
Dietary restriction of valine, a branched-chain amino acid, extends lifespan in male mice and improves healthspan markers in both sexes. The sex-specific lifespan benefit suggests that amino acid metabolism operates through distinct physiological pathways between males and females, with implications for precision nutritional interventions in aging.
Liver's dual protein-sensing pathways shift with age
Low-protein diets trigger distinct molecular responses in the liver during aging, mediated both through and independent of FGF21 signaling. This dual-pathway mechanism reveals how nutrient restriction at the transcriptomic level may influence metabolic adaptation and longevity outcomes across the lifespan.
Valine Restriction Extends Male Lifespan 23%
Lifelong dietary valine restriction increased median lifespan in male mice by 23% and maximum lifespan by 15%, while producing modest healthspan improvements in both sexes through mechanisms linked to elevated hepatic mitochondrial activity. The effect was sex-specific, with females showing minimal lifespan extension, pointing to underlying differences in amino acid metabolism between sexes.
Dietary metabolomic determinants of frailty through inflammation in the Canadian Longitudinal Study on Aging
Specific dietary metabolites—compounds produced when the body processes food—predict frailty risk through inflammatory pathways in aging adults. This identifies measurable intermediate markers that connect diet composition to loss of physical function, a primary driver of morbidity and mortality in older populations.
Formulation Precision Over Ingredients in Longevity
Sooo.me, a bootstrapped supplement company founded by mathematician Erika Paulė, positions formulation precision and dose efficacy as central to longevity optimization rather than ingredient novelty or marketing claims. The company's approach reflects a broader shift in the longevity sector toward systems-level thinking about aging and the recognition that supplement adherence depends on integrating functional ingredients into everyday habits rather than clinical protocols.
Muscle Circadian Decline Drives Age-Related Bone Loss
Muscle cells lose circadian clock function with age, disrupting a molecular pathway that normally suppresses bone-degrading inflammation. Time-restricted feeding restores this protective rhythm, reducing inflammatory signals and bone loss in aged mice—suggesting a dietary intervention that coordinates multiple organ systems without pharmacological intervention.
Intermittent chloroquine extends lifespan by enhancing cellular clearance
Intermittent chloroquine treatment extended lifespan in female rats while preventing mammary hyperplasia and reducing circulating LDL and IGFBP3—markers associated with metabolic dysfunction and tissue overgrowth. This intervention operates through cellular clearance mechanisms, suggesting a pathway distinct from standard pharmaceutical approaches to longevity.
Proteostatic Trade-Off Limits Lifespan, Reversible Through LET-607
LET-607, a transcription factor in C. elegans, enforces a trade-off between two protein-quality control systems—suppressing cytosolic stress response while promoting endoplasmic reticulum stress response. Removing LET-607 rebalances this allocation, enhancing cytosolic protein quality control and extending lifespan, suggesting that developmental optimization sacrifices longevity potential.
Protein intake preserves muscle function across lifespan
Heliconius butterflies achieve lifespans many times longer than other butterfly species by eating pollen in addition to nectar, a protein-rich adaptation linked to sustained muscle function and slower physical decline with age. This observation suggests that nutritional density and the maintenance of muscular capacity may be key mechanisms underlying extended healthspan across species.
Elevated trimethylamine levels characterize impaired muscle mass response to leucine-enriched protein supplementation in older adults at risk of sarcopenia
Elevated trimethylamine—a gut-derived metabolite—predicts which older adults will fail to gain muscle mass from leucine-enriched protein supplementation. This biomarker distinction reveals that sarcopenia interventions require individual metabolic assessment, not one-size-fits-all protocols.
Frailty Reversal Reduces Mortality in Aging Populations
Sustained frailty remission—the persistent reversal of frailty status over time—associates with reduced all-cause and cause-specific mortality in aging populations. This finding establishes frailty as a modifiable risk factor with direct implications for mortality reduction, not merely a marker of inevitable decline.
Gut health, autoimmunity and the diet dilemma
Dr. Terry Wahls demonstrates that reframing chronic disease management from treatment to cellular infrastructure—with diet as the primary lever—can produce measurable functional recovery in progressive autoimmune conditions. Her work challenges the assumption that certain diseases are irreversible by restoring gut microbial balance and improving cell-level function through nutritional design.
Probiotic Lactiplantibacillus plantarum OL3246 supports healthy aging by enhancing quality of life, reducing inflammation, and modulating gut microbiota: a pilot study
A pilot study demonstrates that Lactiplantibacillus plantarum OL3246 improves quality of life in aging adults through measurable reductions in inflammatory markers and shifts in gut microbiota composition. This probiotic strain shows potential as a targeted intervention for mitigating age-related inflammatory decline.
Inflammation’s statin moment edges closer
BioAge's NLRP3 inhibitor BGE-102 produced marked reductions in inflammatory biomarkers (hsCRP, IL-6, fibrinogen) in Phase 1 testing, positioning upstream inflammasome inhibition as a potential scalable approach to chronic inflammation management. This advances a field that has lacked convenient, long-term preventive options despite growing evidence that inflammation drives cardiovascular and age-related disease.