Why polluted coal is poisoning people in the Chinese countryside

In rural areas of Southwestern China, villagers' habits of picking up loose coal for use in their homes has lead to an epidemic that may have poisoned millions. The coal is exposed through erosion, and then picked up by locals and used for cooking and heating. Unfortunately the coal is unusually high in fluoride, which is then burned, and enters the system through inhalation of particles, and through food which absorbs the pollutant.

This leads to an incredibly high incidence of fluorosis, both of the skeleton and the teeth, which can lead to crippling joint problems, deformed bones and severely damaged teeth.

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The Chinese government is attempting to combat the epidemic by pushing programs to install chimneys in rural and poor communities, which would effectively vent the particles.

Research presented at the AVS 57th International Symposium and Exhibition

DISCUSSION

phoenix6666-old
phoenix6666

If fluoride is bad for the teeth, why do dentists and some school programs encourage fluoride mouth washes?