In the world of sports, athletes are constantly seeking ways to improve their performance and gain an edge over their competitors. While proper training and a healthy diet are essential, some athletes turn to nutritional supplements to enhance their performance.
However, not all supplements are created equal, and some are even banned by sports organizations due to their potential to enhance performance beyond what is considered natural. In this article, we'll take a look at some of the most common prohibited nutritional supplements.

Anabolic steroids: Anabolic steroids are synthetic variations of the male hormone testosterone, which is naturally produced in the body. They are often used by athletes to build muscle mass and improve their strength and endurance. However, the use of anabolic steroids is associated with a range of negative health effects, including liver damage, high blood pressure, and an increased risk of heart disease. Anabolic steroids are banned by all major sports organizations.
Human growth hormone (HGH): Human growth hormone is a hormone that is naturally produced by the body's pituitary gland. It plays a key role in growth and development, and also helps to regulate body composition and metabolism. However, synthetic HGH is often used by athletes to enhance muscle growth and recovery. It is banned by all major sports organizations.

Ephedrine: Ephedrine is a stimulant that is often used in weight loss supplements and energy drinks. It works by increasing heart rate and metabolism, which can lead to weight loss and increased energy. However, ephedrine can also cause high blood pressure, heart palpitations, and even heart attacks. It is banned by the World Anti-Doping Agency (WADA) in all sports.
Beta-2 agonists: Beta-2 agonists are a type of drug that is used to treat asthma and other respiratory conditions. However, they can also have performance-enhancing effects, such as increased endurance and reduced fatigue. Beta-2 agonists are banned by WADA in all sports, except in certain circumstances where they are used to treat medical conditions.
Diuretics: Diuretics are drugs that are used to increase urine production and reduce water retention in the body. They are often used by athletes to quickly lose weight or mask the use of other banned substances. However, diuretics can also lead to dehydration, electrolyte imbalances, and other health problems. They are banned by WADA in all sports.

Stimulants: Stimulants are a class of drugs that are used to increase alertness, attention, and energy. They are often used by athletes to improve their focus and reaction time. However, stimulants can also cause side effects such as anxiety, insomnia, and heart palpitations. They are banned by WADA in all sports, except in certain circumstances where they are used to treat medical conditions.
Blood doping: Blood doping is the practice of artificially increasing the number of red blood cells in the body, which can enhance endurance and athletic performance. It is often achieved by injecting erythropoietin (EPO), a hormone that stimulates the production of red blood cells. However, blood doping can also cause serious health problems, such as blood clots and stroke. It is banned by all major sports organizations.
In conclusion, while nutritional supplements can play a valuable role in supporting athletic performance and recovery, not all supplements are safe or legal. Athletes should always do their research and consult with a qualified healthcare professional before taking any supplements, to ensure that they are not risking their health or their careers. The list of prohibited nutritional supplements is constantly evolving, as new substances are discovered and tested. As such, it is important for athletes to stay informed and up-to-date on the latest regulations in their sport.