If you have been reading about Anti-doping and want a single page that covers the useful parts, this is it: definitions, context, how it is studied, and the questions that come up repeatedly.
Updated 2026-03-06. Numbers and descriptions here follow the published literature rather than marketing material.
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.
At the molecular level, GW501516 binds and activates PPARδ, a nuclear receptor that regulates transcription. Activation shifts expression of genes involved in fatty acid oxidation, energy expenditure, and lipid transport in skeletal muscle and liver. Animal studies report increased endurance and altered lipid profiles after exposure. Human data are limited to small trials and do not establish long-term safety or efficacy. PPARδ also has roles in cell proliferation, so the relationship between activation and cancer risk remains an open question.
Published literature on cardarine includes in vitro assays, rodent experiments, and a small number of human studies. Reports describe effects on exercise capacity and lipid metabolism in animals, while human evidence is sparse. Many online descriptions present the compound as a proven endurance aid, a claim not supported by regulatory approval or large clinical trials. Analytical studies focus on identifying the parent compound and its metabolites in biological samples. Important uncertainties include species differences, dose-response relationships, and the relevance of rodent tumor findings to humans.
| Property | Value | Notes |
|---|---|---|
| Common synonyms | GW501516, GW-501516, GW 501516, endurobol | Names vary in research and anti-doping documents. |
| Chemical class | Synthetic PPARδ agonist | Small-molecule nuclear receptor ligand. |
| CAS Registry Number | 317318-70-0 | Identifier commonly associated with GW501516. |
| Appearance | White to off-white powder | Typical for purified research material. |
| Solubility | Low in water; soluble in DMSO and ethanol | Organic solvents are common for laboratory stock solutions. |
Legal status varies by country. In some places, cardarine is controlled under medicines or psychoactive substances laws; in others, it may be sold with minimal oversight as a research chemical. Customs agencies have intercepted shipments, and several national health agencies have issued warnings about products marketed for bodybuilding or performance enhancement. The lack of a standardized pharmaceutical supply means identity, purity, and contamination levels can differ widely between samples. These factors make cardarine a regulatory and public health concern rather than a conventional prescription drug.
Cardarine is a common name for GW501516, a synthetic compound first described in the 1990s as a selective agonist of the peroxisome proliferator-activated receptor delta. It was studied in preclinical models for metabolic and cardiovascular conditions, but it has not been approved as a medicine in the United States, Europe, or other major jurisdictions. Retail products labeled as cardarine are generally research chemicals or supplements, not pharmaceutical formulations. Because human safety and efficacy data remain limited, regulatory agencies treat it as an unapproved substance rather than a therapeutic product.
Sporting authorities added GW501516 to prohibited lists after it appeared in athlete samples and online markets. The World Anti-Doping Agency classifies it as a hormone and metabolic modulator, and its use can lead to an anti-doping rule violation. Some early laboratory work suggested effects on fatty acid oxidation and endurance-related metabolism in animals, but those findings do not establish safe or effective use in people. Reports of adverse events in humans are scarce and often anecdotal, which complicates risk assessment.
Because cardarine is not an approved medicine, no pharmacopeial monograph defines its identity, purity, or storage requirements. Laboratories typically rely on in-house methods and reference standards when testing materials labeled as GW501516. Certificates of analysis may report purity and identity for a specific batch, but their scope varies and they do not guarantee safety or legal status. Independent verification can include high-performance liquid chromatography, mass spectrometry, nuclear magnetic resonance, and elemental analysis. The distinction between research chemical labeling and human use is significant because quality standards and oversight differ.
Cardarine can be detected in biological samples and product materials using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The method separates compounds by chromatography and identifies them by mass-to-charge transitions, allowing low-level detection in urine or blood. Sample preparation often involves enzymatic hydrolysis, solid-phase extraction, or protein precipitation. Certified reference materials and isotope-labeled internal standards improve quantification. Detection windows depend on metabolism, matrix, and assay sensitivity, so no single universal window applies.
Products sold as cardarine have been found to contain incorrect compounds, variable amounts, or no active ingredient at all. Independent testing is required to verify identity and purity. Common analytical approaches include high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance for structural confirmation. These methods can distinguish GW501516 from related PPAR agonists and from unrelated steroids. For regulators and researchers, such verification is central to interpreting both biological results and adverse event reports.
Cardarine is prohibited in competitive sport under the World Anti-Doping Agency code, where it is classified as a metabolic modulator. It is not approved as a prescription medicine in the United States, European Union, or other major markets. Regulatory action has focused on its presence in sports and in products marketed as research chemicals. Because it has no accepted medical indication, supply is often unregulated. This status creates legal and safety uncertainties for anyone who encounters the substance.
Anti-doping laboratories detect GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be used in some programs. Detection depends on factors such as dose, timing, metabolism, and the sensitivity of the assay. Published methods describe limits of detection in the low nanogram per milliliter range for related compounds. Exact detection windows are not fixed for all situations and remain an area of ongoing study.
=== 1970s === 1970: Australian geologist and palaeontologist Dorothy Hill became the first female president of the Australian Academy of Science. 1970: New Zealand geologist and palynologist Rosemary Askin the first New Zealand woman to undertake her own research programme in Antarctica. 1970: Spanish biochemist Margarita Salas discovered and characterized the Φ29 phage DNA polymerase. She was also the first scientific woman elected to the Royal Spanish Academy and was the first woman recipient of the Carlos J. Finlay Prize for Microbiology. 1970: Samira Islam became the first Saudi Arabian person to earn a PhD in pharmacology. 1970: American astronomer Vera Rubin published the first evidence for dark matter. 1970: Polish geologist Franciszka Szymakowska became widely known because of her unique and detailed geological drawings that are still used today. 1971: Romanian chemist Ecaterina Ciorănescu-Nenițescu became a member of the New York Chemical Society. She was noted for developing synthesis processes for antituberculosis drugs and insecticides and creating new substances using cytostatic grafting. 1973: American physicist Anna Coble became the first African-American woman to receive a PhD in biophysics, completing her dissertation at University of Illinois. 1974: Dominican marine biologist Idelisa Bonnelly founded the Dominican Republic Academy of Science. 1975: Indian chemist Asima Chatterjee was elected the General President of the Indian Science Congress Association. She simultaneously became the first female scientist ever elected a member of the congress.
== As infant formula == In the 1920s and 1930s, evaporated milk became widely commercially available at low prices. The Christian Diehl Brewery, for instance, entered the business in 1922, producing Jerzee brand evaporated milk as a response to the Volstead Act, which prohibited alcoholic beverages. Several clinical studies from that time period suggest that babies fed evaporated milk formula thrived as well as did breastfed babies. However, modern guidelines issued by the World Health Organization consider breastfeeding, in most cases, to be healthier for the infant because of the colostrum in early milk production, as well as the specific nutritional content of human breast milk.
== Diagnosis == Kwashiorkor, or edematous malnutrition, like many other malnutrition diseases, is indirectly assessed using anthropometry. Kwashiorkor is a subtype of severe acute malnutrition (SAM) characterized by bilateral peripheral pitting edema. According to the World Health Organization, the SAM diagnosis parameters are a "mid-upper arm circumference (MUAC) of < 115 mm, weight-for-height/length Z-score (WHZ) of < -3Z and nutritional edema or any combination of these parameters." Additional clinical findings on physical exam include marked muscle atrophy, abdominal distension, dermatitis, and hepatomegaly. WHO criteria for clinical assessment of malnutrition are based on the degree of wasting (MUAC), stunting (weight-for-height Z-score), and the presence of edema (mild to severe). In addition to anthropometric measures, laboratory tests can be critical for diagnosing kwashiorkor. Low serum albumin levels (hypoalbuminemia) are a hallmark of protein deficiency, and elevated liver enzymes may indicate liver dysfunction. Electrolyte imbalances and blood tests may also be used to assess the degree of organ involvement and complications. Specifically in children, severe malnutrition, such as kwashiorkor, can lead to notable changes in brain function and behavior. Children with kwashiorkor tend to be irritable and may develop cerebral atrophy, whereas those with severe wasting frequently show apathy, reduced movement, and speech delays. These neurological and behavioral changes are key factors in the clinical assessment of malnutrition.
However, bicalutamide does not increase sex hormone levels if combined with adequate doses of an antigonadotropin such as a GnRH modulator, estrogen, or progestogen, due to the negative feedback effects of these medications on sex-hormone production. Because bicalutamide does not lower androgen levels, it may be a particularly favorable antiandrogen for transgender women who wish to help preserve sex drive, sexual function, and/or fertility, as antiandrogens that strongly suppress levels of testosterone and its metabolites, such as CPA and GnRH modulators, can greatly disrupt these functions. Although bicalutamide has the potential to increase testosterone levels, there is no effect of this testosterone due to the blockade of the AR by bicalutamide. Neyman and colleagues in 2019 published a study on bicalutamide as a puberty blocker in adolescent transgender girls. It was employed both alone (n=17) and in combination with estrogen (n=6) at a dose of 50 mg/day in 23 transgender girls (mean age of 16 years, range 12 to 18.4 years) between 2013 and 2018. Of the girls who were treated exclusively with bicalutamide alone, 13 returned for follow-up and were analyzed. In addition to apparently showing effectiveness as an antiandrogen and puberty blocker, bicalutamide alone increased estradiol levels and promoted feminization as a secondary effect. This included breast development to Tanner stages 2 to 5 in 85% of the patients at the first follow-up visit at 6.3 months of treatment.
Sources: en.wikipedia.org
German painters have influenced Western art. Albrecht Dürer, Hans Holbein the Younger, Matthias Grünewald and Lucas Cranach the Elder were important German artists of the Renaissance, Johann Baptist Zimmermann of the Baroque, Caspar David Friedrich and Carl Spitzweg of Romanticism, Max Liebermann of Impressionism and Max Ernst of Surrealism. Several German art groups formed in the 20th century; Die Brücke (The Bridge) and Der Blaue Reiter (The Blue Rider) influenced the development of expressionism in Munich and Berlin. The New Objectivity arose in response to expressionism during the Weimar Republic. After World War II, broad trends in German art include neo-expressionism and the New Leipzig School. German designers became early leaders of modern product design. The Berlin Fashion Week and the fashion trade fair Bread & Butter are held twice a year. Architectural contributions from Germany include the Carolingian and Ottonian styles, which were precursors of Romanesque. Brick Gothic is a distinctive medieval style that evolved in Germany. Also in Renaissance and Baroque art, regional and typically German elements evolved (e.g. Weser Renaissance). Vernacular architecture in Germany is often identified by its timber framing (Fachwerk) traditions and varies across regions, and among carpentry styles. When industrialisation spread across Europe, classicism and a distinctive style of historicism developed in Germany, sometimes referred to as Gründerzeit style. Expressionist architecture developed in the 1910s in Germany and influenced Art Deco and other modern styles.
==== Pollybeak ==== The "pollybeak" deformity, characterized by excessive supratip fullness usually involving a cartilaginous hump or loss of tip projection, is the indication for approximately 50% of all revision rhinoplasties. If too much of the osseo-cartilaginous framework is removed, the consequent weakening can cause the external nasal skin to become shapeless, resulting in a "pollybeak" deformity, resembling the beak of a parrot.
=== Interoperability === The DASH7 Alliance is currently working on a certification program that functionally tests the DASH7 devices. The certification is composed of a set of test scenarios covering transactions in different stack configurations (channel, QoS, security). The physical wireless interface is not covered by the certification and will have to comply to local radio regulations.
Pot roast – in one of the Lakota legends recorded in Lakota mythology, the character Wohpe is seen creating a dish in exactly the same manner as we make pot roasts today—sealing a large chunk of meat and vegetables in a bag and steaming it in a pot.
the pump (including controls, processing module, and batteries) a disposable reservoir for insulin (inside the pump) a disposable infusion set, including a cannula for subcutaneous insertion (under the skin) and a tubing system to connect the insulin reservoir to the cannula. Other configurations are possible. More recent models may include disposable or semi-disposable designs for the pumping mechanism and may eliminate tubing from the infusion set. An insulin pump is an alternative to multiple daily injections of insulin by insulin syringes or an insulin pen and allows for flexible insulin therapy when used in conjunction with blood glucose monitoring and carbohydrate counting.
Sources: en.wikipedia.org
Testosterone is used as a medication for the treatment of male hypogonadism, gender dysphoria, and certain types of breast cancer. This is known as hormone replacement therapy (HRT) or testosterone replacement therapy (TRT), which maintains serum testosterone levels in the normal range. Decline of testosterone production with age has led to interest in androgen replacement therapy. It is unclear if the use of testosterone for low levels due to aging is beneficial or harmful. Testosterone is included in the World Health Organization's list of essential medicines, which are the most important medications needed in a basic health system. It is available as a generic medication. It can be administered as a cream or transdermal patch that is applied to the skin, by injection into a muscle, as a tablet that is placed in the cheek, or by ingestion. Common side effects from testosterone medication include acne, swelling, and breast enlargement in males. Serious side effects may include liver toxicity, heart disease (though a randomized trial found no evidence of major adverse cardiac events compared to placebo in men with low testosterone), and behavioral changes. Women and children who are exposed may develop virilization. It is recommended that individuals with prostate cancer not use the medication. It can cause harm if used during pregnancy or breastfeeding. 2020 guidelines from the American College of Physicians support the discussion of testosterone treatment in adult men with age-related low levels of testosterone who have sexual dysfunction.
== Ecuador == On 3 March, 2026, United States Southern Command and the Ecuadorian Armed Forces launched joint military operations against alleged drug traffickers based in Ecuador, in an expansion of the ongoing Ecuadorian conflict. Initial reporting indicated that the US. was not directly participating in these operations, instead providing intelligence and logistical support, as well as U.S. special forces training, for Ecuadorian commandos. On 6 March, Ecuador and the United States claimed that their militaries had conducted a joint operation, a bombing of a location in the Cascales Canton region, along the Colombia-Ecuador border. Both governments asserted the target was a compound belonging to Comandos de la Frontera, a group of FARC dissidents accused of drug smuggling. The Pentagon claimed the bombing was conducted by the US military, while Ecuador, in a Spanish language press release, stated the bombing was conducted by their forces with US intelligence. On 24 March, a New York Times report emerged stating that the target was actually a cattle and dairy farm, which was destroyed by at least three rockets fired from a helicopter. The strike was part of a larger, week-long operation, during which Ecuadorian soldiers interrogated farmworkers, burned down their shelters with gasoline, and burned down and bombed two nearby homes. The following day, 25 March, the Ecuadorian Defense Ministry commented on the event, indicating "The Ministry of National Defense rejects any assertion that distorts facts".
When the upper plate was connected to the negative pole of the battery and the lower plate to the positive pole, the glowing patch moved downwards, and when the polarity was reversed, the patch moved upwards.
Dizziness Fatigue Low blood pressure Diarrhea Weakness Slowed heart rate Weight gain Erectile dysfunction Carvedilol is not recommended for people with uncontrolled bronchospastic disease (e.g. current asthma symptoms) as it can block receptors that assist in opening the airways. Carvedilol may mask symptoms of low blood sugar, resulting in hypoglycemia unawareness. This is termed beta blocker induced hypoglycemia unawareness.
=== Board positions === Thomsen has held several leadership and advisory positions in academia and industry. Additionally, he has served as chairman of the Danish Biotech Research and Innovation Centre and has participated in governmental committees related to post-graduate education reforms in Denmark.
Sources: en.wikipedia.org
Cardarine is an investigational synthetic compound that acts as a PPARδ agonist. It is also known as GW501516 and has been studied mainly in preclinical research. It is not an approved medicine.
No. Cardarine is not a steroid hormone; it targets the nuclear receptor PPARδ. Its classification in anti-doping rules differs from anabolic steroids, though it remains prohibited in sport.
Early rodent studies reported tumor formation at multiple sites, which raised safety concerns. Sponsors stopped clinical development, and no approved human product exists.
Cardarine is a common name for the investigational compound GW501516. It acts as a PPARδ agonist and is not approved for human use. It is prohibited in sport.