Bioactive molecules are natural compounds that have an effect on living organisms. They can be found in various sources, including plants, animals, and microorganisms. These molecules play crucial roles in biological processes, influencing functions such as cell signaling, immune response, and metabolism. Examples include vitamins, flavonoids, and alkaloids. Many bioactive molecules are studied for their potential health benefits. For instance, polyphenols found in fruits and vegetables are known for their antioxidant properties. Research is ongoing to explore how these compounds can contribute to disease prevention and overall well-being, making them a significant focus in fields like nutraceuticals and pharmacology.