The impact of heavy metals and ultra-processed foods on cognitive decline is a serious public health issue backed by extensive scientific research. By understanding the sources, mechanisms, preventive measures, and detoxification methods, we can take steps to protect our brain health and advocate for a cleaner, safer environment.Heavy metals, such as lead, mercury, arsenic, and cadmium, are naturally occurring elements found in the Earth's crust. While some, like iron and zinc, are essential ...