Which substances comes under S3 category in prohibited list of Wada?

Question

Accepted Answer

The correct option is (1):
The correct answer, **Anabolic Agents**, represents a foundational category of substances strictly forbidden in all competitive sports due to their significant performance-enhancing properties. This class primarily includes Anabolic Androgenic Steroids (AAS) and other synthetic agents that work by mimicking the effects of the body’s natural testosterone. Their primary mechanism is to stimulate protein synthesis and inhibit protein degradation, which dramatically increases muscle mass, strength, and bone density beyond natural limits. The anti-doping system places this category at a high priority because the use of Anabolic Agents fundamentally violates the principle of fair play and introduces severe health risks, such as cardiovascular and liver damage, making them one of the most serious violations in the WADA Prohibited List.

The incorrect option is (2):
**Peptide Hormones** are a separate major classification of prohibited substances on the WADA List, typically designated as S2. This group includes complex molecules like Erythropoietin (EPO) and various Growth Hormones (GH) and their related factors. Unlike anabolic agents, which are primarily focused on muscle growth, peptide hormones mostly work as signaling molecules to stimulate physiological processes such as red blood cell production (EPO) or tissue growth and repair (GH). Their inclusion is due to their ability to enhance oxygen transport and accelerate recovery, which is a different pathway for performance enhancement than the direct tissue building of anabolic agents. Therefore, they are not the correct substances for the category specified.

The incorrect option is (3):
**Diuretics** are listed in a distinct category, commonly referred to as S5 (Diuretics and Masking Agents), and are not primarily used for their anabolic effects. Their main action is to increase urination, thereby reducing body weight—a function useful for athletes needing to meet a specific weight class quickly. More importantly, diuretics are banned because they can be used as 'masking agents' to dilute the presence of other prohibited substances in an athlete’s urine sample, making drug testing significantly less effective. Because their function is fundamentally tied to fluid balance and masking, they are categorized separately from the Anabolic Agents.

The incorrect option is (4):
**Beta-2 Agonists** are categorized separately on the WADA Prohibited List and are primarily recognized for their use in treating respiratory conditions like asthma. These substances, such as Salbutamol, work by relaxing the muscles around the airways to improve breathing capacity. While their abuse may offer a marginal performance benefit, they are structurally and physiologically distinct from Anabolic Agents. Their use is regulated with specific therapeutic dose thresholds and a separate classification, indicating they do not belong to the Anabolic Agents category, which is dedicated to muscle-building compounds.