A factorial experiment was conducted with weanling rats fed a purified diet to determine the influence of dietary chloride (0.02, 0.10, and 0.5%) as sodium chloride on fluoride non-availability (2 or 10ppm as sodium fluoride). After 8 wk, rats fed the lowest chloride-containing diets had significant reductions of plasma chloride, urinary chloride excretion and growth rate compared to other chloride groups. Depressed growth occurred in rats fed chloride-deficient diets despite the fact that food intake was similar for all treatments. Fluoride retention was greatest in chloride-deficient rats, which was reflected in enhanced skeletal uptake of fluoride. Fluoride absorption was not inhibited by high chloride intake. We therefore conclude that emphasis on the effect of chloride on fluoride bioavailability should be directed towards an enhancement of fluoride retention by low salt (sodium chloride) diets rather than in terms of a possible negative effect of a high salt diet on fluoride absorption.
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2019. I found Holland & Barrett do several unfluoridated toothpastes; below are two; not their entire range, I think. The label may need to be read:– | |
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Below: 2021. XOC hemp toothpaste. (It's a green gel; not really a paste). Seems to be marketed for women. Free flexible long head toothbrush with this pack
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© RW 2016-08-21. This longer version 2017-08-11. Revised 2018-01-31, 2018-04-10.
Two more Holland & Barrett 2019-01-11. Hemp toothpaste added 20 Nov 2021. Paul Connett added 10 Dec 2022.
Unfluoridated repair toothpastes 26 August 2023.
Notes on FAN and Fluoride Alert 3 May 2024.
Note on Biorepair Italian fluoride-free toothpaste with patent on zinc apatite 3 May 2024.