4 ms·

Seems to me that this just says the water used to make the tea has fluoride. And Ireland just has significantly more fluoride than most places.

• n4r9 8y ago
  It's both the water and the fluoride content of the tea leaves, although the tea leaves are the main contributor. The first table in the paper shows this. Edit: spelling and comprehension corrected; pre-tea morning fog.
  • cies 8y ago
    Thanks for actually reading, unlike the parent.