Disclaimer:<\/strong> This article is for educational purposes only. It does not provide medical advice, diagnosis, or treatment recommendations. Performance-enhancing drugs (PEDs) can carry significant health risks. Always consult a qualified healthcare professional before making decisions related to medications or supplements.<\/p>\n Anabolic steroids are synthetic versions of testosterone. They are among the most studied performance enhancement drugs.<\/p>\n Major medical organizations such as the National Institute on Drug Abuse (NIDA) and the U.S. Centers for Disease Control and Prevention (CDC) warn about long-term cardiovascular and hormonal complications.<\/p>\n EPO stimulates red blood cell production, improving oxygen delivery to muscles.<\/p>\n These methods are banned in competitive sports and can be life-threatening when misused.<\/p>\n Stimulants may increase alertness, reaction time, and perceived energy.<\/p>\n Creatine is a naturally occurring compound found in muscle cells and one of the most researched sports supplements.<\/p>\n Unlike anabolic steroids, creatine is legal and widely supported by sports nutrition guidelines.<\/p>\n Testosterone replacement therapy (TRT) is medically prescribed for diagnosed low testosterone. Outside medical supervision, it is often used as a PED.<\/p>\n Official prescribing information can be found through government drug databases such as the U.S. FDA (e.g., FDA drug labels<\/a>).<\/p>\n Products sold online may also contain undeclared substances, increasing unpredictability.<\/p>\n Performance enhancement strategies generally fall into three categories:<\/p>\n These often have measurable performance effects but carry medical, legal, and ethical risks.<\/p>\n Some are supported by sports science research, especially creatine and caffeine, while others show mixed or small effects.<\/p>\n These approaches have strong evidence and lower health risk. For more general health foundations, see our overview on sports nutrition basics<\/a> and sleep and recovery science<\/a>.<\/p>\n Many PEDs are banned by the World Anti-Doping Agency (WADA). In some countries, possession or distribution of anabolic steroids without prescription is illegal. Competitive athletes should consult official anti-doping rules.<\/p>\nQuick summary<\/h2>\n
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What is known<\/h2>\n
1. Anabolic-androgenic steroids (AAS)<\/h3>\n
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2. Erythropoietin (EPO) and blood doping<\/h3>\n
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3. Stimulants (e.g., amphetamines, certain ADHD medications)<\/h3>\n
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4. Creatine<\/h3>\n
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5. Testosterone therapy (medical use vs misuse)<\/h3>\n
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What is unclear \/ where evidence is limited<\/h2>\n
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Overview of approaches<\/h2>\n
1. Pharmacological (drug-based)<\/h3>\n
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2. Nutritional supplements<\/h3>\n
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3. Non-drug performance optimization<\/h3>\n
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Legal and ethical considerations<\/h3>\n
Evidence table<\/h2>\n
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\n Statement<\/th>\n Confidence level<\/th>\n Why<\/th>\n<\/tr>\n \n Anabolic steroids increase muscle mass and strength.<\/td>\n High<\/td>\n Multiple randomized and observational studies show consistent effects.<\/td>\n<\/tr>\n \n Anabolic steroids increase cardiovascular risk.<\/td>\n High<\/td>\n Strong epidemiological data and biological mechanisms support this.<\/td>\n<\/tr>\n \n EPO improves endurance performance.<\/td>\n High<\/td>\n Well-documented physiological mechanism and clinical evidence.<\/td>\n<\/tr>\n \n Most \u201cnatural test boosters\u201d significantly raise testosterone.<\/td>\n Low<\/td>\n Limited high-quality human trials; inconsistent findings.<\/td>\n<\/tr>\n \n Creatine improves high-intensity exercise performance.<\/td>\n High<\/td>\n Supported by numerous meta-analyses in sports science.<\/td>\n<\/tr>\n<\/table>\n Practical recommendations<\/h2>\n
Safer general measures<\/h3>\n
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When to see a doctor<\/h3>\n
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Preparing for a consultation<\/h3>\n