ABSTRACT
Fluoride is considered as safe when taken in permissible amount; in case of excessive consumption, it causes multiple ill effects on human body such as elevation of thyroid hormone. This literature review was carried out to evaluate the impact of fluoride on human health and then enlighten healthcare personnel including dentists and physicians whether consumption of fluoride is beneficial or harmful. Ample literature is available which revealed that there is only one advantage; to prevent tooth carries when fluoride is topically applied in permissible value, and there are more harmful effects of excessive fluoride ingestion on human health. An individual can have 1.5mg/L of fluoride by inhalation or ingestion from all resources, namely food, air, and environment to prevent dental decay. One can additionally use topical fluoride over the teeth so that there would not be the need of community water fluoridation which can lead to lethal health outcomes