Antagonists

Antagonists are substances or factors that oppose or inhibit the action of another, often in biological systems. In medicine, an antagonist typically blocks or reduces the effect of a hormone, neurotransmitter, or drug by binding to its receptor without activating it. For example, in the body, certain medications called beta-blockers are antagonists that prevent adrenaline from binding to its receptors, lowering blood pressure. In a broader context, antagonists can also refer to opposing forces or characters in stories, representing obstacles or conflicts. Overall, antagonists work against a specific process or entity to maintain balance or achieve a desired effect.