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A comment on L-theanine, a constituent in tea, and its effect on mental state (2008) [pdf].

Re:L-theanine, a constituent in tea, and its effect on menta... by cies on Monday July 30, 2018 @11:01PM (#17650222)
Too bad that tea contains so much fluoride.

Outlined in this paper "Risk Assessment of Fluoride Intake from Tea in the Republic of Ireland and its Implications for Public Health and Water Fluoridation"

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4808922

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Re:L-theanine, a constituent in tea, and its effect on menta... by willio58 on Monday July 30, 2018 @11:05PM (#17650238)
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.
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Re:L-theanine, a constituent in tea, and its effect on menta... by n4r9 on Tuesday July 31, 2018 @05:15AM (#17651667)
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.

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Re:L-theanine, a constituent in tea, and its effect on menta... by cies on Wednesday August 01, 2018 @08:51PM (#17668422)
Thanks for actually reading, unlike the parent.
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Re:L-theanine, a constituent in tea, and its effect on menta... by gpvos on Tuesday July 31, 2018 @02:04AM (#17650893)
> The Republic of Ireland (RoI) is the only European Country with a mandatory national legislation requiring artificial fluoridation of drinking water

So, only a problem in countries that do fluoridation. (I didn't know that that was the case in Ireland. This definitely reduces the chance of me ever moving there.)

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Re:L-theanine, a constituent in tea, and its effect on menta... by hadeon on Monday July 30, 2018 @11:03PM (#17650229)
Not if you live in New Zealand with naturally low fluoride levels!
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Re:L-theanine, a constituent in tea, and its effect on menta... by n4r9 on Tuesday July 31, 2018 @05:53AM (#17651826)
The study found that the fluoride already present in the tea leaves was the main source of exposure. Those tea leaves were mostly imported from East Africa, as is the case for many cheap tea bags. Therefore drinking a lot of cheap tea bag tea in New Zealand is potentially not much better.
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