Fluoride is a natural mineral found in varying concentrations in water sources worldwide. It is commonly added to public water supplies as a preventive measure to promote dental health and reduce the risk of tooth decay.
This practice, known as water fluoridation, aims to provide widespread access to fluoride, particularly for those who may not have access to regular dental care.
Adding fluoride to water has been studied and supported by many health organisations as a safe and effective way to improve oral health. Fluoride helps strengthen tooth enamel and makes teeth more resistant to acid attacks from plaque bacteria, thereby reducing the occurrence of dental cavities.
However, some individuals have expressed concerns about potential adverse effects associated with fluoride in water.
One concern is dental fluorosis, a cosmetic condition that can occur when individuals are exposed to excessive levels of fluoride during tooth development. Dental fluorosis typically manifests as white streaks or spots on the teeth. It is important to note that the occurrence of dental fluorosis is low at the optimal levels of fluoride added to public water supplies.

In addition, there have been a few studies suggesting potential associations between high fluoride intake and certain health issues, such as skeletal fluorosis or neurodevelopmental disorders. However, further research is needed to establish definitive causal relationships and to understand the potential risks, if any, associated with fluoride intake.
Decisions about water fluoridation policies are made at the local or national level, considering scientific research, community input, and regulatory guidelines to ensure the benefits outweigh any potential risks.