1. Most tea consumed worldwide is of Asian origin. Camellia sinensis is native to East Asia.
"On any given day, more than one half of the American population drinks tea. On a regional basis, the South and Northeast have the greatest concentration of tea drinkers."
Tea may easily contain 5 to 10 times as much fluoride as fluoridated water.
2. TOTAL intake is what determines fluoride toxicity. This has been established since the 1930s when fluoride was discovered to be the source of "mottled enamel" - dental fluorosis.
In 1991, total intake among adults in fluoridated areas in the US was estimated to be up to 6.6 mg/day. (US PHS, 1991)
"The daily intake of most adults is about equally divided among food, drinking water, beverages, and mouthrinses." (U.S. Dept. Health & Human Services, Report on fluoride benefits and risks. MMWR Recomm Rep. 1991 Jun 14;40(RR-7):1-8. PMID: 2051975.)
The NTP monograph is a very flawed document, as the review failed to consider a crucial confounder/modifier - iodine/thyroid status. Fluoride toxicity is directly dependent on the individual's thyroid/iodine status. If iodine-deficient, even miniscule amounts of fluoride may affect you. If iodine intake is excessive, then iodine toxicity may be pre-dominant - this has been known since the 1930s.
"On any given day, more than one half of the American population drinks tea. On a regional basis, the South and Northeast have the greatest concentration of tea drinkers."
Source: https://www.teausa.com/teausa/images/Tea_Fact_2021.pdf
Tea may easily contain 5 to 10 times as much fluoride as fluoridated water.
2. TOTAL intake is what determines fluoride toxicity. This has been established since the 1930s when fluoride was discovered to be the source of "mottled enamel" - dental fluorosis.
In 1991, total intake among adults in fluoridated areas in the US was estimated to be up to 6.6 mg/day. (US PHS, 1991)
"The daily intake of most adults is about equally divided among food, drinking water, beverages, and mouthrinses." (U.S. Dept. Health & Human Services, Report on fluoride benefits and risks. MMWR Recomm Rep. 1991 Jun 14;40(RR-7):1-8. PMID: 2051975.)