Ethnobotanical studies are the branch of science that studies the medicinal applications traditionally used by plants. In conditions where it is difficult to access professional healthcare, people try to treat many diseases with the plants around them. This process has been going on from generation to generation for centuries. It has been recorded through ethnobotanical studies that many plants are used among people in many countries to regulate brain functions. Many plants contain natural ingredients used to support brain health. For example, some herbs, such as ginkgo, are thought to increase memory and cognitive functions. Other herbs, such as ginseng, can help cope with stress and improve mental performance. Ethnobotanical studies are supported by laboratory studies and clinical trials to evaluate the potential effects of plants on brain health. These studies investigate biological mechanisms to understand how herbal ingredients affect brain health. As a result, ethnobotanical studies are helping to discover potential treatments that can use plants to support brain health. However, more research is needed on the effectiveness and safety of these herbs, and people should consult a healthcare professional before using these herbs.