Everything below concerns Counterion. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-04-12. Where a claim depends on a specific study, the study is described rather than over-claimed.
Regulatory treatment varies by country. In the United States, NMN has been marketed as a dietary supplement, but the Food and Drug Administration has stated that it is excluded from the dietary supplement definition because it was authorized for investigation as a new drug before being marketed as a supplement. Other jurisdictions may treat it as a novel food, a supplement, or an unapproved drug ingredient. Import and sale rules can therefore differ substantially.
Quality control for NMN focuses on identity, purity, residual solvents, heavy metals, and microbial limits. Because the molecule can absorb water, moisture content and packaging are relevant to shelf life. Suppliers may provide certificates of analysis, but independent verification is often needed for research or commercial use. The long-term stability of different crystal forms, salt forms, and formulations is not fully characterized in the public literature. Some degradation products and their effects on product performance remain open questions.
As a commercial ingredient, nicotinamide mononucleotide is commonly supplied as a powder or capsule. Its stability depends on temperature, moisture, pH, and light exposure. Hydrolytic and thermal degradation can increase over time, so manufacturers and laboratories often store material cold and dry. Purity is typically assessed with chromatographic methods, and identity can be confirmed by mass spectrometry. Published stability data for specific finished products remain limited. More data would help define shelf life under real-world conditions.
Quality control for NMN materials typically includes identity, assay, purity, and impurity profiling. Tests may cover residual solvents, heavy metals, microbial limits, and water content, depending on the intended use and local rules. Impurity profiles can include related substances such as nicotinamide, nicotinamide riboside, and NAD+, which may form during synthesis or storage. Because commercial NMN can be offered as different salts or hydrate forms, a certificate of analysis should state the form and the analytical methods used. Independent verification is relevant because supplement markets vary in testing requirements and enforcement.
Laboratory identification of NMN usually relies on chromatographic separation coupled with ultraviolet or mass spectrometric detection. High-performance liquid chromatography with UV absorbance can quantify the compound against a reference standard, while liquid chromatography-tandem mass spectrometry offers lower detection limits and better specificity in complex matrices. Nuclear magnetic resonance spectroscopy can confirm structural identity and isomeric form. Ion chromatography or capillary electrophoresis may be used to identify counterions such as sodium. Method validation includes accuracy, precision, linearity, and limits of detection.
Stability testing examines how temperature, humidity, light, and pH affect NMN over time. The compound is generally stored cold, often at minus twenty degrees Celsius or lower, in a desiccated container protected from light. Aqueous solutions tend to be less stable than dry powder because hydrolysis and dephosphorylation can occur, potentially forming nicotinamide riboside or other degradation products. Stress studies may expose samples to heat, acid, base, oxidation, and strong light to identify likely degradation pathways. Results from such studies help define shelf life and handling recommendations, though exact stability depends on formulation and packaging.
| Property | Value | Notes |
|---|---|---|
| Typical storage temperature | 2-8 °C or below | For laboratory samples; follow supplier guidance |
| Light sensitivity | Protect from light | Exposure may accelerate degradation |
| Moisture sensitivity | Hygroscopic | Use sealed containers and desiccant |
| Common purity assay | HPLC-UV or LC-MS | Purity often reported as area percent |
| Regulatory status | Varies by country | Supplement, novel food, or drug categories differ |
Commercial NMN is produced through enzymatic or chemical routes, and the resulting material can vary in purity, counterion, and residual solvent content. Buyers typically rely on certificates of analysis, but independent verification through third-party laboratories provides stronger assurance. Regulatory treatment differs by country; in the United States, NMN has been subject to shifting guidance about its status as a dietary supplement, while other markets permit sales under local rules. No universal pharmacopeial monograph exists for NMN, so specifications often come from suppliers, research protocols, or regional requirements.
Solid NMN is generally handled as a moisture-sensitive compound. Dry material stored desiccated at low temperature, protected from light, tends to remain stable for extended periods. Aqueous solutions are less stable and can undergo hydrolysis, especially at elevated temperature or alkaline pH. The anomeric form also matters: beta-NMN is the naturally occurring form, while alpha-NMN can appear as a synthetic impurity. Purity and storage conditions therefore influence both analytical results and experimental reproducibility.
Regulatory treatment of NMN varies by jurisdiction and has changed over time. Some countries allow it in dietary supplements, while others treat it as a novel food ingredient requiring safety review. In the United States, the Food and Drug Administration has questioned whether NMN can be lawfully marketed as a dietary supplement because of drug preclusion provisions. Sports organizations have separate rules, and NMN is not currently on the World Anti-Doping Agency prohibited list. These differences create uncertainty for manufacturers, retailers, and researchers seeking consistent legal pathways.
Nicotinamide mononucleotide is usually handled as a dry powder because moisture can promote hydrolysis and shorten shelf life. Recommended storage conditions often include a desiccated container at minus twenty degrees Celsius or colder, with protection from light. Aqueous solutions are less stable than solid material and may degrade faster at ambient temperature or neutral pH. Repeated freeze-thaw cycles can introduce variability, so aliquoting is common in laboratory settings. These practices reflect general nucleotide chemistry rather than a single universal protocol.
Analytical laboratories identify and quantify NMN using several complementary techniques. High-performance liquid chromatography with ultraviolet detection is widely used for purity and assay work. Liquid chromatography coupled to mass spectrometry provides greater sensitivity and is common for biological matrices. Nuclear magnetic resonance spectroscopy supports structural confirmation and can distinguish related nucleotides. Accurate measurement depends on reference standards, validated methods, and careful sample preparation, especially because NMN can convert to related compounds under some conditions.
Identity and purity of NMN are commonly assessed by liquid chromatography with ultraviolet detection or mass spectrometry. High-performance liquid chromatography can separate related impurities such as nicotinamide, nicotinamide riboside, and NAD+ depending on the method. Mass spectrometry provides molecular mass confirmation, while nuclear magnetic resonance spectroscopy helps establish structure and anomeric form. Quantitative assays often use calibration curves and, in biological samples, stable isotope-labeled internal standards. Method validation addresses specificity, linearity, accuracy, precision, and limits of detection.
Quality control for NMN materials typically includes appearance, assay, impurity profile, residual solvents, heavy metals, and microbial limits. A certificate of analysis summarizes specified tests, but the underlying methods and laboratory accreditation matter. Regulatory treatment varies by country; NMN is sold as a dietary supplement in some markets, while other jurisdictions restrict its use in foods or classify it differently. Independent verification can reduce risks of mislabeling or substitution. Questions remain about how product purity, storage history, and formulation affect delivered dose in humans.
Solid NMN is a polar, water-soluble nucleotide that can absorb moisture from air. Its phosphate ester is susceptible to hydrolysis, and degradation is faster in aqueous solution, under strongly acidic or alkaline conditions, and at elevated temperatures. For laboratory and commercial handling, the solid is typically kept desiccated, protected from light, and stored frozen. Repeated freeze-thaw cycles can introduce moisture and accelerate breakdown. Stability data for specific formulations should be generated rather than assumed from the parent compound.
The initial cost of an incandescent bulb is small compared to the cost of the energy it uses over its lifetime. Incandescent bulbs have a shorter life than most other lighting, an important factor if replacement is inconvenient or expensive. Some types of lamp, including incandescent and fluorescent, emit less light as they age; this may be an inconvenience, or may reduce effective lifetime due to lamp replacement before total failure. A comparison of incandescent lamp operating cost with other light sources must include illumination requirements, cost of the lamp and labor cost to replace lamps (taking into account effective lamp lifetime), cost of electricity used, effect of lamp operation on heating and air conditioning systems. When used for lighting in houses and commercial buildings, the energy lost to heat can significantly increase the energy required by a building's air conditioning system. During the heating season heat produced by the bulbs is not wasted, although in most cases it is more cost effective to obtain heat from the building's heating system. Regardless, over the course of a year a more efficient lighting system than incandescent saves energy in nearly all climates.
==== Llansó National Masonic Asylum ==== In 2023, rumors started circulating on social media that the Hogar Nacional Masónico Llansó (English: Llansó National Masonic Retirement Home), a retirement home specifically for elderly Cuban Freemasons, had 21,000 dollars of cash (unspecified "freely convertible" currency) in their treasury. After these social media posts started circulating, the Board of Trustees worried they might be robbed, because Llansó is located in a "rough part of town," in Arroyo Naranjo near La Güinera neighborhood of Havana. Grand Master Mario Urquía Carreño, who also served as the Co-President of the Board of Trustees for Llansó, volunteered that his own office safe could store the money. 19,000 of the cash was then transferred to the vaults of the Grand Lodge of Cuba at the National Masonic Temple, the rest of this money the retirement home kept for expenses and emergencies. The money transfer was signed by three Worshipful Brothers present for the transaction. The Grand Master's office was on the eleventh floor, the top floor, of the National Masonic Temple. At a Board of Trustees meeting in October 2023, Ángel Santiesteban Prats, representing the office of Grand Commander Viñas Alonso, requested a monthly count of the money be performed by Grand Treasurer Airán Cervera. Grand Master Urquía Carreño informed Santiesteban Prats that the money was in the vault of his own office, not in the possession of the Grand Treasurer.
=== Nigeria === Medical residency in Nigeria is a structured postgraduate training program designed to produce specialists in various fields of medicine and dentistry. The training is overseen by two primary institutions:
==== Shortness of breath ==== Opioids may help with shortness of breath particularly in advanced diseases such as cancer and COPD. However, findings from two recent systematic reviews of the literature found that opioids were not necessarily more effective in treating shortness of breath in patients who have advanced cancer.
==== Ingestion ==== When dealing with an oral bolus dose (e.g. ingestion of a tablet), first order absorption is a very common assumption. In that case the gut equation is augmented with an input term, with an absorption rate constant Ka:
Sources: en.wikipedia.org
SPECULOOS-3 b, an exoplanet nearly identical in size to Earth, is discovered orbiting an ultracool dwarf star as small as Jupiter and located 55 light-years from Earth. Solar energy is combined with synthetic quartz to generate temperatures of more than 1,000°C. This proof-of-concept method shows the potential of clean energy to replace fossil fuels in heavy manufacturing, according to a research team at ETH Zurich. 16 May – A multimodal algorithm for improved sarcasm detection is revealed. Trained on a database known as MUStARD, it can examine multiple aspects of audio recordings and has 75% accuracy. 17 May – The world's smallest quantum light detector on a silicon chip is demonstrated, 50 times smaller than their previous version. 20 May – The first measurements of an exoplanet's core mass are obtained by the James Webb Space Telescope. This reveals a surprisingly low amount of methane and a super-sized core within the super-Neptune WASP-107b. 23 May New images from the Euclid space telescope are published, including a view of the Messier 78 star nursery. Astronomers using TESS report the discovery of Gliese 12 b, a Venus-sized exoplanet located 40 light-years away, with an equilibrium temperature of 315 K (42 °C; 107 °F). This makes it the nearest, transiting, temperate, Earth-sized world located to date. A team shows that iron instead of cobalt and nickel can be used as a cathode material in lithium-ion batteries, improving both safety and sustainability.
Cobalt (Co) is a rare, essential trace element needed by adults at the level of 0.1 μg per day as part of vitamin B12. Levels above 10 mg per day can cause severe cardiomyopathies. Copper (Cu) is essential for human health and copper toxicity is rare and occurs primarily in inherited diseases of the liver. Iron (Fe) is required for hemoglobin in red blood cells. Large excesses of iron from dietary supplements, on the order of 0.5 g, can cause acute iron poisoning. Magnesium (Mg), important for many types of reactions in cells, rarely poses a hazard unless ingested by people with severe renal failure or as metal fume fever from magnesium oxide. Manganese (Mn) inhalation during mining causes manganese poisoning. Molybdenum (Mo) is an essential element with low toxicity. Its toxicity resembles copper deficiency and treatment with copper reduces the toxic effects of molybdenum. Selenium (Se) is a required nutrient to form selenoproteins; inadequate amounts lead to Keshan disease. Excess selenium causes Selenosis. However the element itself has low solubility and the biologically active forms are ions +6, +4, and +2. Zinc (Zn) has a Recommended dietary allowance of 15 mg and is only toxic at ten times that amount. Zinc toxicity is rare. Free zinc ion in solution is highly toxic to bacteria, plants, invertebrates, and fish. Metal fume fever occurs when zinc oxide (ZnO) is inhaled by welders working on galvanized steel or brass. Dietary deficits of some metals, including calcium (Ca), zinc, iron, selenium, copper, chromium and manganese increase toxic effects of metals.
Cardiovascular: dyslipidemia (e.g., increased LDLTooltip low-density lipoprotein levels, decreased HDLTooltip high-density lipoprotein levels, reduced apo-A1Tooltip apolipoprotein A1 levels), atherosclerosis, elevated hematocrit, hypertension, left ventricular hypertrophy, cardiomyopathy, myocardial hypertrophy, polycythemia/erythrocytosis, arrhythmias, thrombosis (e.g., embolism, stroke), myocardial infarction, sudden death. Hepatic: elevated liver function tests (ASTTooltip aspartate aminotransferase, ALTTooltip alanine aminotransferase, bilirubin, LDHTooltip lactic dehydrogenase, ALPTooltip alkaline phosphatase), hepatotoxicity, jaundice, hepatic steatosis, hepatocellular adenoma, hepatocellular carcinoma, cholestasis, peliosis hepatis; all mostly or exclusively with 17α-alkylated AAS. Renal: renal hypertrophy, nephropathy, acute renal failure (secondary to rhabdomyolysis), focal segmental glomerulosclerosis, renal cell carcinoma. Others: glucose intolerance, insulin resistance, immune dysfunction.
=== Reference materials === Reference materials are compounds which are carefully calibrated against the primary reference or a calibration material. These compounds allow for isotopic analysis of materials differing in chemical or isotopic composition from the compounds defining the isotopic scales on which measurements are reported. In general these are the materials most researchers mean when they say "reference materials". An example of a reference material is USGS-34, a KNO3 salt with a δ15N of -1.8‰ vs. AIR. In this case the reference material has a mutually agreed upon value of δ15N when measured relative to the primary reference of atmospheric N2 (Böhlke et al., 2003). USGS-34 is useful because it allows researchers to directly measure the 15N/14N of NO3− in natural samples against the standard and report observations relative to N2 without having to first convert the sample to N2 gas.
== See also == Collective intelligence Futurists Internet think tanks List of think tanks List of think tanks in the United States Lobbying Mass collaboration Mass communication Overton window School of thought Strategic studies TED (conference)
Sources: en.wikipedia.org
According to a study by Colombia's National Centre for Historical Memory, 220,000 people have died in the conflict between 1958 and 2013, most of them civilians (177,307 civilians, 40,787 fighters) and more than five million civilians were forced from their homes between 1985 and 2012, generating the world's second largest population of internally displaced persons (IDPs). The report shows that the humanitarian crisis in Colombia is extremely serious in terms of both lethal and nonlethal violence: it examines the widespread use of sexual violence against women and girls as a weapon of war, as well as the invisibility of this phenomenon. 16.9% of the population in Colombia has been a direct victim of the war. 2.3 million children have been displaced from their homes, and 45,000 children have been killed, according to national figures cited by Unicef. In total, one in three of the 7.6 million registered victims of the conflict are children, and since 1985, 8,000 minors have disappeared. As of 2016, some 1,000 children have been forcibly recruited by some of the myriad armed groups in the country, 75 have been killed, and 65 schools have been damaged by fighting since peace talks with FARC began. According to the report "Basta ya", written in 2013 by Colombia's National Centre for Historical Memory, 80% of victims affected by conflict-related violence and landmines were civilians. The report documents 1,982 massacres between 1980 and 2012. The Government also began a process of assistance, attention, and comprehensive reparation for victims of conflict.
== Traditional and alternative uses == The medicinal uses of insects and other arthropods worldwide have been reviewed by Meyer-Rochow, who provides examples of all major insect groups, spiders, worms and molluscs and discusses their potential as suppliers of bioactive components. Using insects (and spiders) to treat various maladies and injuries has a long tradition and, having stood the test of time, can be effective and provide results. However, sometimes folk-medicinal "logic" was based on the Doctrine of Signatures ("let likes be cured by likes") and had, if any at all, little more than a psychological effect. For example, to treat cases of constipation, dung beetles were prescribed; to slim down stick insects were thought to help; hairy tarantulas seemed the right treatment for hair loss and fat grubs resembling the swollen limb caused by the parasite Wuchereria bancrofti were expected to help the elephantiasis patient. An organism bearing parts that resemble human body parts, animals, or other objects, was thought to have useful relevance to those parts, animals or objects. So, for example, the femurs of grasshoppers, which were said to resemble the human liver, were used to treat liver ailments by the indigenous peoples of Mexico. This doctrine is common throughout traditional and alternative medicine, but is most prominent where medical traditions are broadly accepted, as in traditional Chinese medicine and Ayurveda, and less by community and family based medicine, as is more common in parts of Africa.
== Education and career == Brenner graduated from Wesleyan University with a bachelor's degree in biology in 1983. After working for the biotechnology companies Chiron Corporation and DNAX Research Institute, Brenner attended graduate school at Stanford University School of Medicine. At Stanford he worked with Robert S. Fuller, receiving his Ph.D. in Cancer Biology in 1993. Brenner conducted post-doctoral research at Brandeis University with Gregory Petsko and Dagmar Ringe. Brenner then joined the faculty at Thomas Jefferson University, where he worked from 1996 to 2003, becoming Director of the Structural Biology & Bioinformatics Program in 2000. He moved to Dartmouth Medical School in 2003, serving as associate director for Basic Sciences at Norris Cotton Cancer Center (now named Dartmouth Cancer Center) from 2003 to 2009. In 2009 he joined the University of Iowa (UI) as Professor and Head of Biochemistry. In 2010 he was awarded the Roy J. Carver Chair of Biochemistry at UI, holding that position until 2020. In 2020, Brenner joined City of Hope National Medical Center in Duarte, California as the inaugural chair of a new department of diabetes and cancer metabolism created to focus at the intersection of metabolic disturbances with diseases such as cancer and diabetes.
=== Non-specific hydrophobic association === Amphitropic proteins associate with lipid bilayers via various hydrophobic anchor structures. Such as amphiphilic α-helixes, exposed nonpolar loops, post-translationally acylated or lipidated amino acid residues, or acyl chains of specifically bound regulatory lipids such as phosphatidylinositol phosphates. Hydrophobic interactions have been shown to be important even for highly cationic peptides and proteins, such as the polybasic domain of the MARCKS protein or histactophilin, when their natural hydrophobic anchors are present.
MD-derived structure predictions can be tested through community-wide experiments in Critical Assessment of Protein Structure Prediction (CASP), although the method has historically had limited success in this area. Michael Levitt, who shared the Nobel Prize partly for the application of MD to proteins, wrote in 1999 that CASP participants usually did not use the method due to "... a central embarrassment of molecular mechanics, namely that energy minimization or molecular dynamics generally leads to a model that is less like the experimental structure". Improvements in computational resources permitting more and longer MD trajectories, combined with modern improvements in the quality of force field parameters, have yielded some improvements in both structure prediction and homology model refinement, without reaching the point of practical utility in these areas; many identify force field parameters as a key area for further development. MD simulation has been reported for pharmacophore development and drug design. For example, Pinto et al. implemented MD simulations of Bcl-xL complexes to calculate average positions of critical amino acids involved in ligand binding. Carlson et al. implemented molecular dynamics simulations to identify compounds that complement a receptor while causing minimal disruption to the conformation and flexibility of the active site. Snapshots of the protein at constant time intervals during the simulation were overlaid to identify conserved binding regions (conserved in at least three out of eleven frames) for pharmacophore development.
Sources: en.wikipedia.org
Laboratory samples are often kept cool, dry, and protected from light, with frozen storage used for longer periods. Finished products should follow label instructions and avoid excessive heat or moisture.
High-performance liquid chromatography can assess purity, while mass spectrometry can confirm molecular identity. Nuclear magnetic resonance may also be used in research settings.
No. Regulatory status differs by country and can change, with some markets allowing supplement sales and others restricting it as a novel food or unapproved drug ingredient.
NMN is often measured by high-performance liquid chromatography with ultraviolet detection. Liquid chromatography-tandem mass spectrometry can provide greater sensitivity and specificity. The chosen method should be validated and compared against a certified reference standard when possible.