Marihuana, also known as cannabis, is a plant that has been used for thousands of years for various purposes, including medicinal, recreational, and industrial applications. The plant contains compounds called cannabinoids, with the most well-known being THC (tetrahydrocannabinol) and CBD (cannabidiol). These compounds interact with the body's endocannabinoid system, which can affect mood, appetite, and pain perception. In many places, marihuana is legal for medical use, allowing patients to access it for conditions like chronic pain or anxiety. Some regions have also legalized it for recreational use, leading to a growing industry that includes cultivation, distribution, and retail sales. However, laws regarding marihuana vary widely around the world.