Nad nicotinamide adenine dinucleotide C21H27N7O14P2 is an essential supplement at age 50 NAD level are half of what they use to be compared to age 20 NAD levels are higher at youth NAD+ acts as fuel for many key biological process, such as converting food into energy . Repairing damaged DNA. Fortifying cells’ defense systems. Setting your body’s internal clock or circadian rhythm, However, the amount of NAD+ in your body naturally falls with age . Low NAD+ levels have been linked to health concerns like aging and chronic illnesses, such as diabetes, heart disease, Alzheimer’s disease and vision loss . Interestingly, animal research has found that raising NAD+ levels may help reverse signs of aging and lower the risk of many chronic disease . Nicotinamide riboside supplements — such as niagen — have quickly become popular because they appear to be especially effective at raising NAD+ level. Nicotinamide adenine dinucleotide (NAD) is a vital cofactor involved in brain bioenergetics for metabolism and ATP production, the energy currency of the brain. NAD exist in an oxidized (NAD+) or reduced (NADH) form, with NAD+/NADH (the redox ratio) being an important determinant of cytosolic & mitochondrial metabolic homeostasis. NAD+ play an essential role in glycolysis & the citric acid (TCA) cycle, by its ability to accept hydride equivalents, forming NADH during adenosine triphosphate (ATP) production. NADH is one of the central electron donors in oxidative phosphorylation in the mitochondria, providing electrons to the electron transport chain (ETC) to generate most of the ATP. These reactions support the high energy demand of the brain, particularly neurons, which are derived mostly from glucose metabolism under physiological condition. Additionally, NAD+ is a key substrate for multiple NAD+-dependent enzymes implicated in neuronal integrity. It is consumed by at least four classes of enzymes involved in genomic stability, mitochondrial homeostasis, adaptive stress responses, & cell survival. Emerging evidence also implicate NADH directly in the microglial immune response induced by changes in brain energy metabolism, possibly via binding and activation of the transcriptional co-repressor C-terminal binding protein CtBP , "without NAD you're dead in 30 seconds" quote Dr David Sinclair by the age of 50 NAD level are half of age 20 it is written in the Holy King James Bible the revelation of the Lord according to saint John the apostle 50 AD Anno Domini in the year of our Lord Jesus Christ Revelation 22:2 In the midst of the street of it, & on either side of the river, was there the tree of life, which bare twelve manner of fruits, & yielded her fruit every month: & the leaves of the tree were for the healing of the nations. amen “Let food be thy medicine, and let medicine be thy food.” Hippocrates 460BC Let supplements be thy medicine & let medicine be thy supplement let NAD be your food make NAD your supplement . Nicotinamide, also known as niacinamide, is a water-soluble B vitamin (B3) essential for cellular energy, metabolism & DNA repair, acting as a precursor to vital coenzymes like NAD. Found in food & supplements, Nicotinamide treats pellagra, improve skin health (brightening & reducing spots), protect against UV damage, and show promise in neuroprotection & cancer therapy by enhancing cellular energy & DNA repair. While generally safe, high doses does not cause mild side effects like stomach upset or flushing, and it's used topically and orally safely with no problem. Key Function & Use Energy Metabolism: Convert to NAD/NADP, crucial for producing ATP (cellular energy) from carbs, fats & protein. DNA Repair: A key substrate for PARP-1, an enzyme vital for fixing DNA damage, protecting against cancer. Skin Health: Brighten skin tone, lighten dark spots, and protect against UV-induced skin damage and immunosuppression. Neurological Health: Support neuronal function, with research exploring its neuroprotective role in condition like Alzheimer's & Parkinson's. Disease Treatment: Used for pellagra (niacin deficiency) & studied for diabetes, cancer (as a radiosensitizer/chemosensitizer) & vascular health. Sources Food: Fish, poultry, nuts, legumes & eggs. Supplements: Available as oral tablets, capsules & topical serum. Consideration Flushing: Unlike nicotinic acid (another form of niacin), nicotinamide does not cause skin flushing. The chemical formula for niacinamide (also known as nicotinamide or Vitamin B3) is C₆H₆N₂O, consisting of 6 carbon atoms, 6 hydrogen atoms, 2 nitrogen atoms & 1 oxygen atom, forming a pyridine ring with a carboxamide group.
Yes, absolutely. All seven mammalian Sirtuins (SIRT1–SIRT7) are strictly dependent on NAD (Nicotinamide Adenine Dinucleotide) as an obligate co-substrate for their enzymatic reaction. Unlike conventional deacetylases (class I, II & IV HDACs) which simply use a water molecule to hydrolyze an acetyl group from a protein, Sirtuins (class III HDACs) actively consume one molecule of NAD for every acetyl group they remove. The Molecular Reaction: How Sirtuins Consume NAD When a Sirtuin deacetylates a target protein (such as histone H3, FOXO3a, or p53), it break down NAD+ into two distinct metabolic output: Protein-Lys-Acetyl + NAD+ Sirtuin Deacetylated Protein + O-Acetyl-ADP-Ribose + Nicotinamide NAM. Sirtuin Reaction O-Acetyl-ADP-Ribose Nicotinamide (NAM) (Signaling Molecule / Chromatin Modulation) (Endogenous Feedback Inhibitor)
1. Deacetylated Protein Target: Restore the positive charge on the lysine residue, altering protein conformation, activity, or chromatin binding.
2. O-Acetyl-ADP-Ribose (OAADPR): A unique metabolite produced during the cleavage of NAD+, which function as a downstream signaling molecule in chromatin remodeling & ion channel regulation.
3. Nicotinamide (NAM): Free vitamin B3, which act as a direct endogenous feedback inhibitor of Sirtuins. High cellular accumulation of NAM halt Sirtuin activity until it is recycled via the NAD+ salvage pathway (driven by the rate-limiting enzyme NAMPT). Why NAD+ Dependency Matter for Cellular Longevity? Because Sirtuins require NAD+, their catalytic activity act as a direct sensor of cellular energy status & metabolic redox: The NAD + NADH Ratio as an Energy Sensor: High nutrient availability (high calories, elevated glucose,) drive NAD+ reduction to NADH, shrinking the available pool of oxidized NAD+ turning down Sirtuin activity. Fasting, Exercise, & Stress Response: Energy deprivation (fasting, calorie restriction, exercise) increase the intracellular NAD+ NADH ratio upregulate NAMPT, driving high Sirtuin activity to promote DNA repair, mitochondrial biogenesis (via PGC-1alpha) & FOXO-mediated autophagy. Age-Related Decline: Systemic NAD+ level decline with age (partially driven by consumption from inflammation-induced CD38 enzymes and PARP-1 DNA repair enzymes), leading to a progressive loss of SIRT1/SIRT6 surveillance over time. Subcellular Localization of NAD+ Dependent Sirtuins May the Holy Roman Catholic Church be blessed by God the Father God the Son & God the Holy Spirit Hallelujah Hallelujah ˗ˏˋ ✞ ˎˊ˗ Blessed be the word of the Lord for Christ is risen Hallelujah Hallelujah peace be still in Nomine Patris et FiLii et Spiritus Sancti amen & amen
https://www.youtube.com/watch?v=JagPP3MX5ks
Cellular Respiration: How Do Cell Get Energy?
https://www.youtube.com/watch?v=sctwzsI1hH0
REVERSE AGING: Dr. David Sinclair on NMN & Top NMN Benefits!