What are the safest levels of fluoride levels in drinking water?
Sources:
The recommended safe level of fluoride in drinking water is set at 0.7 mg/L (milligrams per liter) by the Centers for Disease Control and Prevention (CDC). This level is intended to help prevent tooth decay while being deemed safe for general consumption. It's essential to note that fluoride levels above this standard can potentially lead to health concerns, particularly regarding thyroid function and overall health outcomes, which can vary based on individual consumption habits and genetic factors 1 2.
Andrew Huberman highlights that while fluoride can strengthen teeth and reduce cavities, excessive intake could disrupt thyroid hormone output and metabolism, especially at levels around 0.5 mg/L and above 1 2. Therefore, individuals are encouraged to test their drinking water to determine its fluoride concentration and assess whether it's within safe limits 1.
In summary, the key points are:
- Safe fluoride level: 0.7 mg/L according to CDC.
- Concern with higher levels: Potential thyroid dysfunction and health risks begin at around 0.5 mg/L.
- Individual monitoring: Testing tap water for fluoride levels is recommended to ensure safety and health.
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