However, its concentration in drinking water should not be too high. If it was absorbed excessively for a long period, it can cause dental fluorosis, severe skeletal fluorosis for worse or even paralysis resulting in the loss the labor capability. 但饮用水中的含量不宜过高,如果长期饮用超标的含氟水,轻则引起氟斑牙,严重时会引起氟骨症,甚至瘫痪以致丧失劳动能力。