Everything below concerns Prohibited substance. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2025-12-16. Where a claim depends on a specific study, the study is described rather than over-claimed.
GW501516 acts on PPARδ, a nuclear receptor that helps regulate fatty acid oxidation and energy homeostasis. In animal studies, activation of this receptor was associated with increased endurance and changes in lipid metabolism. Human trials examined effects on blood lipids and other metabolic markers, but the compound did not advance to approval. Rodent studies later reported tumors in multiple tissues at doses used in those experiments. Whether those findings translate to human risk remains uncertain, and the clinical relevance of the animal data is still debated.
Regulatory bodies treat GW501516 as a prohibited substance in competitive sport. The World Anti-Doping Agency added it to the prohibited list, and it falls under classes covering metabolic modulators and hormone-related agents. It is not approved by drug regulators for human use, and it is not a lawful dietary supplement. Products sold under the cardarine name may contain unlisted ingredients or different compounds. Because no approved product exists, quality and identity are not guaranteed by pharmaceutical manufacturing standards.
Cardarine is a common name for the investigational chemical GW501516, also written GW-1516. It was developed as a peroxisome proliferator-activated receptor delta agonist for metabolic conditions such as dyslipidemia. Early research focused on lipid handling and energy use in skeletal muscle and other tissues. The compound was never approved as a medicine. In public discussion, it is often grouped with performance-enhancing substances, although its receptor target differs from that of anabolic steroids or selective androgen receptor modulators. Regulatory and health authorities have issued warnings about its use.
Anti-doping laboratories identify GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the usual matrix, and detection can occur after the parent compound has cleared from blood. The exact detection window depends on dose, formulation, individual metabolism, and assay sensitivity. Because the compound is prohibited at all times, athletes are subject to testing in and out of competition. Analytical methods continue to improve as new metabolites and designer analogs are characterized.
GW501516 acts as a ligand for PPAR delta, a nuclear receptor that regulates transcription of genes involved in fatty acid oxidation and energy use. Activation of this receptor in skeletal muscle shifts metabolism toward fat burning in animal models. The compound does not burn fat directly; it changes gene expression over hours to days. Researchers study it to understand metabolic flexibility and exercise adaptation. Effects observed in rodents are not automatically expected in humans.
Preclinical research reported that GW501516 increased running endurance in mice and improved lipid profiles in some animal species. Early human trials explored effects on high-density lipoprotein cholesterol, triglycerides, and glucose handling, but the program was discontinued. Published human data are sparse and do not establish efficacy for any condition. Studies also examined PPAR delta in cancer biology, with conflicting findings across models. The relationship between receptor activation, tissue context, and disease risk remains an active area of investigation.
| Property | Value | Notes |
|---|---|---|
| Common name | Cardarine | Common internet and media name. |
| Research code | GW501516 | Also written GW-1516. |
| Drug class | PPARδ agonist | Not a selective androgen receptor modulator. |
| Development status | Discontinued | Clinical development halted after rodent cancer findings. |
| Regulatory status | Prohibited in sport | Listed by WADA; not approved as medicine. |
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
GW501516 binds and activates PPARδ, a nuclear receptor that influences transcription of genes involved in fatty acid oxidation and energy use. Activation shifts some metabolic pathways in preclinical models, which is why the compound has been studied for lipid disorders and exercise-related endpoints. The exact downstream effects in humans are incompletely mapped. PPARδ is expressed in many tissues, including skeletal muscle, liver, and adipose tissue, so broad activation may have varied consequences. Researchers continue to examine how selective or partial activation might alter the balance between benefits and risks.
Published human data are sparse and mostly come from early-phase trials. Those studies examined short-term changes in lipids, glucose, and exercise capacity, but they were not large enough to establish efficacy or long-term safety. Some animal experiments reported increased running endurance, yet such findings do not prove a performance benefit in people. Anti-doping laboratories detect GW501516 and its metabolites in urine or blood using liquid chromatography-tandem mass spectrometry. Detection windows depend on dose, sample type, and individual metabolism. The method is sensitive enough to identify trace residues in tested samples.
Cardarine is a synthetic compound also known as GW501516, GW-501516, and sometimes endurobol. It was developed as a selective agonist of peroxisome proliferator-activated receptor delta, a nuclear receptor involved in fatty acid oxidation and energy metabolism. The compound was studied in preclinical models for metabolic and cardiovascular conditions, but it did not become a marketed human medicine. In regulatory and anti-doping contexts, it is treated as a prohibited substance rather than a licensed medicine.
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
The monoclonal antibody infliximab is a mouse-human chimeric antibody to TNF-α. The FDA approved it in 1998, making it the first approved TNF inhibitor. Infliximab has shown significant success in treating both Crohn's disease and ulcerative colitis, but it is also approved for the treatment of rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, and plaque psoriasis.
==== Cap-independent initiation ==== The best-studied example of cap-independent translation initiation in eukaryotes uses the internal ribosome entry site (IRES). Unlike cap-dependent translation, cap-independent translation does not require a 5' cap to initiate scanning from the 5' end of the mRNA until the start codon. The ribosome can localize to the start site by direct binding, initiation factors, and/or ITAFs (IRES trans-acting factors) bypassing the need to scan the entire 5' UTR. This method of translation is important in conditions that require the translation of specific mRNAs during cellular stress, when overall translation is reduced. Examples include factors responding to apoptosis and stress-induced responses.
Past or current history of substance abuse Undiagnosed psychiatric disorders, yet to be identified and treated A young age Family history of substance abuse Social environments that encourage substance use Prolonged use or treatment with opioids Statistically, middle-aged patients with substance use history and psychiatric comorbidities are seen with higher mortality risks such as suicide. Iatrogenic physiological and psychological drug dependence can occur to one of any background. Some physicians are more liberal with their prescribing of opiates and their patients become dependent on opiates by simply following their doctor's orders.
Remdesivir, sold under the brand name Veklury, is a broad-spectrum antiviral medication developed by the biopharmaceutical company Gilead Sciences. It is administered via injection into a vein. During the COVID‑19 pandemic, remdesivir was approved or authorized for emergency use to treat COVID‑19 in numerous countries. Remdesivir was originally developed to treat hepatitis C, and was subsequently investigated for Ebola virus disease and Marburg virus infections before being studied as a post-infection treatment for COVID‑19. Remdesivir is a prodrug that is intended to allow intracellular delivery of GS-441524 monophosphate and subsequent biotransformation into GS-441524 triphosphate, a ribonucleotide analogue inhibitor of viral RNA polymerase. The most common side effect in healthy volunteers is raised blood levels of liver enzymes. The most common side effect in people with COVID‑19 is nausea. Side effects may include liver inflammation and an infusion-related reaction with nausea, low blood pressure, and sweating. The US Food and Drug Administration (FDA) considers it to be a first-in-class medication.
=== Diabetes === Cellular uptake of glucose occurs in response to insulin signals, and glucose is subsequently broken down through glycolysis, lowering blood sugar levels. However, insulin resistance or low insulin levels seen in diabetes result in hyperglycemia, where glucose levels in the blood rise and glucose is not properly taken up by cells. Hepatocytes further contribute to this hyperglycemia through gluconeogenesis. Glycolysis in hepatocytes controls hepatic glucose production, and when glucose is overproduced by the liver without having a means of being broken down by the body, hyperglycemia results.
Sources: en.wikipedia.org
This meeting had been approved at the highest levels of both governments because each side had something the other wanted very badly: the Soviets wanted to know exactly why Boeing had put the 747 engines in under-wing pods instead of at the rear of the fuselage, while Withington and the Boeing engineers had a long list of questions about the processing and use of titanium in airframes (at the time Boeing badly needed this for their proposed Boeing 2707 SST, at Mach 3 too fast and hot for Concorde-style aluminium, and the Soviets then led the world in titanium technology). According to Sutter's account, both sides left the meeting well satisfied with the exchange of information. It seems (again according to Sutter's account of the aftermath) that this meeting may have made a real difference to Soviet aircraft design, but Boeing's contribution could naturally not be acknowledged publicly by the Soviet side. Ilyushin therefore had to stress that it had been the first in the world to use podded engines suspended from pylons beneath and ahead of the wing, on the experimental Ilyushin Il-22 four-engined jet bomber of 1946 (first use of this designation). Having thus presented the Il-86's ultimate configuration as indigenously Soviet, the bureau could at last show it in public in 1973, six years after publication of the aerobus specification and four years after the design assignment. A modern six-window flightdeck followed, in place of the 18-to-20 window glazing of the Il-18, Il-62 and Il-76. The main problem facing the Il-86 project was the lack of a suitable engine.
The use of mAbs that specifically bind to carbohydrate epitopes of AGPs have also been employed to infer functions based on the location and pattern of the AGP epitopes. Commonly used mAb against AGPs include CCRC-M7, LM2, JIM8, JIM13 and JIM14. The function of individual AGPs has largely been inferred through studies of mutants. For example, the Arabidopsis root-specific AtAGP30 was shown to be required for in vitro root regeneration suggesting a function in regenerating the root by modulating phytohormone activity. Studies of agp6 and agp11 mutants in Arabidopsis have demonstrated the importance of these AGPs to prevent uncontrolled generation of the pollen grain and for normal growth of the pollen tube. The functional mechanisms of AGPs in cell signalling is not well understood. One proposed model suggests AGPs can interact and control the release of calcium from AG glycan (via GlcA residues) to trigger downstream signalling pathways mediated by calcium. Another possible mechanism, largely based on the study of FLAs, suggests the combination of fasciclin domain and AG glycans can mediate cell-cell adhesion.
=== Water treatment === Several destructive and non-destructive technologies can be applied to drinking water supplies, groundwater, industrial wastewater, surface water, and other applications such as landfill leachate, including: Non-destructive methods
=== 18 May === Russia claimed to have taken the village of Starytsia in Kharkiv Oblast. Two people were killed in Russian attacks in Kherson Oblast. Lieutenant-colonel Denys Vasyliuk, chief of staff of the Ukrainian Air Force's 831st Tactical Aviation Brigade, was reported killed in action. Truckers partially blocked a section of the Kyiv-Odesa highway near Savran in protest over the revised mobilization law. A Russian court seized over 700 million euros ($700 million) worth of assets from UniCredit, Deutsche Bank and Commerzbank to counter western sanctions. Polish Prime Minister Donald Tusk announced a 10 billion zlotys ($2.55 billion) budget to secure Poland's borders with Russia, Belarus, and Ukraine. Tusk also announced he would speak with the European Investment Bank about financing 500 million zlotys ($127.7 million) for the European Sky Shield Initiative.
Sources: en.wikipedia.org
As he further noted, China "has a much more developed manufacturing base than the old Soviet Union", making a Second Cold War "potentially more dangerous than the" original Cold War, and China's manufacturing capabilities have surpassed those of the US, which "has allowed its industrial base to be hollowed out over the years while supply chains splintered and moved overseas".
Most of the diets associated with the reports of non-hereditary DCM have legume seed ingredients, also called "pulses" (e.g., peas, lentils, etc.), high in their ingredient lists ... these include both "grain-free" and grain-containing formulations. Legumes, including pulse ingredients, have been used in pet foods for many years, with no evidence to indicate they are inherently dangerous, but analysis of data reported to the Center for Veterinary Medicine indicates that pulse ingredients are used in many "grain-free" diets in greater proportion than in most grain-containing formulas. FDA has asked pet food manufacturers to provide diet formulations so we can further understand the proportions of ingredients in commercially-available diets and possible relationships with non-hereditary DCM. The FDA does not know the specific connection between these diets and cases of non-hereditary DCM and is continuing to explore the role of genetics, underlying medical conditions, and/or other factors.
== Definition == Well-being is what is intrinsically or non-instrumentally good for a person or in their self-interest. It is a measure of how well a person's life is going for them. In the broadest sense, the term covers the whole spectrum of quality of life: the balance of all positive and negative aspects of a person's life. More narrowly, well-being refers only to positive degrees and contrasts with ill-being, which denotes negative ones. Its precise definition is disputed and varies across disciplines and cultures. Some characterizations focus on a single element, such as happiness, while others include multiple components, such as good physical and mental health, positive emotions, an engaged and flourishing lifestyle, inner harmony, and positive interpersonal relationships. Some definitions additionally include material conditions, such as income, safety, and environmental quality. Outside the academic context, the term well-being is used more loosely in diverse social and cultural settings, typically as a synonym of health and happiness. Although discussions of well-being usually focus on humans, the term can also refer to the quality of life of non-human animals. As a person-specific value, well-being contrasts with impersonal value, or value simpliciter. A thing has impersonal value if it is good for the world at large by making it a better place, without being restricted to one specific person. Well-being, by contrast, is what is good for or relative to someone.
Sources: en.wikipedia.org
No. Cardarine is a PPARδ agonist, while selective androgen receptor modulators act on androgen receptors. The two classes differ in receptor target and downstream effects.
Preclinical rodent studies reported cancers, including liver and bladder tumors, at tested doses. The human relevance of those findings is uncertain, but development was discontinued. No approved human product resulted.
No. It remains an investigational compound without approved therapeutic labeling. Sports regulators prohibit its use, and health agencies have warned against consuming it.
It binds to and activates PPAR delta, a nuclear receptor that controls expression of genes related to fatty acid oxidation. This mechanism can alter energy metabolism in animal models. It is not a direct stimulant or fat-burning enzyme.