Natural hallucinogens are substances derived from plants, fungi, or other natural sources that can alter perception, mood, and cognitive processes. Common examples include psilocybin mushrooms, peyote cactus, and ayahuasca, which contain compounds that affect the brain's neurotransmitters. These substances have been used for centuries in various cultures for spiritual, religious, or therapeutic purposes. The effects of natural hallucinogens can vary widely, often leading to visual or auditory hallucinations, changes in thought patterns, and altered states of consciousness. While some people seek these experiences for personal insight or healing, they can also pose risks, including psychological distress or adverse reactions, especially in uncontrolled settings.