# Sirtuin 1 (SIRT1) **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/sirtuin-1-sirt1 **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-27 **Evidence Score:** 4 / 10 **Category:** Enzyme **Also Known As:** Silent information regulator 1, NAD-dependent deacetylase sirtuin-1, Regulatory protein SIR2 homolog 1, SIR2L1, hSIR2, Silent mating type information regulation 2 homolog 1, Longevity protein SIRT1 ## Overview SIRT1 is a NAD+-dependent deacetylase enzyme that regulates cellular aging, [metabolism](/ingredients/condition/weight-management), and stress resistance through histone and protein deacetylation. This [longevity](/ingredients/condition/longevity) enzyme activates when cellular energy is low, promoting DNA repair and metabolic efficiency. ## Health Benefits - Supports healthy aging and [longevity](/ingredients/condition/longevity) by activating pathways that protect against cellular stress, extending lifespan by up to 15% in animal studies. - Enhances metabolic function by regulating glucose and lipid [metabolism](/ingredients/condition/weight-management), aiding in weight management. - Aids in stress resistance by activating [antioxidant](/ingredients/condition/antioxidant) defenses, reducing oxidative damage. - Promotes [cardiovascular health](/ingredients/condition/heart-health) by improving endothelial function, lowering heart disease risk. - Boosts [cognitive function](/ingredients/condition/cognitive) by protecting neurons from age-related decline, supporting memory and focus. - Improves [mitochondrial efficiency](/ingredients/condition/energy), increasing cellular energy and vitality. - Reduces [inflammation](/ingredients/condition/inflammation) by modulating immune response, supporting overall wellness. - Supports DNA repair by activating repair enzymes, maintaining genomic integrity. ## Mechanism of Action SIRT1 functions as a NAD+-dependent histone deacetylase that removes acetyl groups from target proteins including p53, FOXO transcription factors, and PGC-1α. This deacetylation activity regulates gene expression involved in gluconeogenesis, fatty acid oxidation, and DNA repair. The enzyme is activated by cellular stress, caloric restriction, and compounds like resveratrol, leading to enhanced [mitochondrial biogenesis](/ingredients/condition/energy) and [autophagy](/ingredients/condition/longevity). ## Clinical Summary Human studies on SIRT1 activators show modest metabolic benefits, with resveratrol supplementation (150-500mg daily) improving [insulin sensitivity](/ingredients/condition/weight-management) by 10-15% in small trials of 20-40 participants. Animal studies demonstrate more pronounced effects, with SIRT1 overexpression extending lifespan by 15-20% in mice and improving glucose tolerance. Most human research focuses on indirect SIRT1 activation through polyphenols rather than direct enzyme supplementation. Evidence for [anti-aging](/ingredients/condition/longevity) effects in humans remains preliminary and requires larger, longer-term studies. ## Nutritional Profile - Not a dietary ingredient; functions as a regulatory enzyme. - Involved in cellular stress resistance and [metabolism](/ingredients/condition/weight-management). - Activated by caloric restriction and compounds like resveratrol. ## Dosage & Preparation Not available as a supplement. Consult a healthcare provider before use. ## Safety & Drug Interactions SIRT1 activators like resveratrol are generally well-tolerated but may cause gastrointestinal upset at doses above 1000mg daily. These compounds can interact with blood-thinning medications due to their effects on platelet aggregation. SIRT1 modulators may affect blood sugar levels and should be used cautiously with diabetes medications. Pregnancy and breastfeeding safety data is insufficient, so avoidance is recommended during these periods. ## Scientific Research Research on SIRT1 highlights its role in aging and metabolic regulation, with numerous studies investigating its potential in extending lifespan and improving metabolic health. Human trials and animal studies underscore its importance in cellular health. ## Historical & Cultural Context SIRT1 gained prominence with the discovery of its activation by resveratrol, leading to extensive research into its role in aging and [metabolism](/ingredients/condition/weight-management). ## Synergistic Combinations Resveratrol, NAD+, Coenzyme Q10 ## Frequently Asked Questions ### What foods naturally increase SIRT1 activity? Red grapes, blueberries, dark chocolate, and green tea contain polyphenols like resveratrol and EGCG that activate SIRT1. Caloric restriction and intermittent fasting also naturally boost SIRT1 expression by increasing cellular NAD+ levels. ### How much resveratrol is needed to activate SIRT1? Studies suggest 150-500mg daily of trans-resveratrol may provide modest SIRT1 activation in humans. However, bioavailability is low, with only 1-2% absorbed, which is why some researchers question whether dietary resveratrol meaningfully activates SIRT1. ### Can SIRT1 supplements actually extend human lifespan? While SIRT1 activation extends lifespan in animal models by 15-20%, human longevity effects remain unproven. Current evidence shows metabolic benefits like improved insulin sensitivity, but clinical trials haven't demonstrated actual lifespan extension in humans. ### What is the difference between SIRT1 and other sirtuins? SIRT1 is primarily nuclear and regulates gene expression and DNA repair, while SIRT3 functions in mitochondria for energy metabolism and SIRT6 focuses on DNA stability. SIRT1 is the most studied and appears most responsive to caloric restriction and polyphenol activators. ### Does NAD+ supplementation boost SIRT1 activity? NAD+ precursors like nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) can increase cellular NAD+ levels by 25-40%, potentially enhancing SIRT1 activity. However, direct evidence that NAD+ supplementation significantly activates SIRT1 in humans remains limited. ### What is the difference between SIRT1 activators and direct SIRT1 supplements? SIRT1 activators like resveratrol and polyphenols stimulate the enzyme's activity indirectly by increasing NAD+ availability or binding to allosteric sites, whereas direct SIRT1 supplements attempt to provide the enzyme itself. Most commercial products focus on activators rather than the enzyme protein, since the enzyme is difficult to deliver orally in active form. Activators may offer more practical bioavailability and sustained activity within the body. ### Is SIRT1 supplementation safe for people taking diabetes or heart medications? SIRT1 activators may enhance insulin sensitivity and improve cardiovascular function, potentially interacting with diabetes medications like metformin or statins by amplifying their effects. Anyone taking glucose-lowering drugs or cardiovascular medications should consult their healthcare provider before starting SIRT1-activating supplements to avoid dose adjustments or hypoglycemic episodes. Blood sugar and blood pressure monitoring may be necessary when combining these substances. ### Which populations benefit most from SIRT1 supplementation? Aging adults over 50, individuals with metabolic syndrome or prediabetes, and those seeking age-related disease prevention show the strongest potential benefits from SIRT1 activation based on current research. Sedentary individuals and those with poor cardiovascular health may experience improvements in endothelial function and metabolic markers. Younger, healthy populations show minimal additional benefit since their baseline SIRT1 activity is naturally higher. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*