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Lithium in drinking water and food, and risk of suicide

Published online by Cambridge University Press:  02 January 2018

Geetha Desai
Affiliation:
Department of Psychiatry, National Institute of Mental Helath and Neurosciences, Bangalore 560029, India. Email: desaigeetha@gmail.com
Santosh K. Chaturvedi
Affiliation:
Department of Psychiatry, National Institute of Mental Helath and Neurosciences, Bangalore, India
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Abstract

Type
Columns
Copyright
Copyright © Royal College of Psychiatrists, 2009 

Ohgami et al Reference Ohgami, Terao, Shiotsuki, Ishii and Iwata1 reported lithium in drinking water (0.7–59 gm/l) and linked it to suicide rates. However, dietary lithium, which has received scant attention, is found in grains and vegetables, and to some extent animal-derived foods. Reference Schrauzer2 Hence, considering only lithium in drinking water may not be enough of a link to suicide rates. Dietary sources of lithium may actually have made the difference rather than just the drinking water. Differences in the prevalence of mood disorders with natural lithium levels acting as a prophylactic have been reported. Reference Jathar, Pendharkar, Pandey, Raut, Doongaji and Bharucha3,Reference Doongaji, Jathar and Satoskar4 Jathar et al Reference Jathar, Pendharkar, Pandey, Raut, Doongaji and Bharucha3 assessed the lithium content of the daily diet (72.55–154.6 μg) and biological fluids, and hypothesised lithium to be a natural prophylactic. It will be interesting to see whether dietary and drinking water lithium levels have a direct impact on mood disorder prevalence, which in turn could explain the variation in suicide rates. And what about lithium-containing food cooked in lithium-containing tap water?

References

1 Ohgami, H, Terao, T, Shiotsuki, I, Ishii, N, Iwata, N. Lithium levels in drinking water and risk of suicide. Br J Psychiatry 2009; 194: 464–5.Google Scholar
2 Schrauzer, GN. Lithium: occurrence, dietary intakes, nutritional essentiality. J Am Coll Nutr 2002; 21: 1421.CrossRefGoogle ScholarPubMed
3 Jathar, VS, Pendharkar, PR, Pandey, VK, Raut, SJ, Doongaji, DR, Bharucha, MP, et al. Manic depressive psychosis in India and the possible role of lithium as a natural prophylactic. II – Lithium content of diet and some biological fluids in Indian subjects. J Postgrad Med 1980; 26: 3944.Google Scholar
4 Doongaji, DR, Jathar, VS, Satoskar, RS. Manic depressive psychosis in India and the possible role of lithium as a natural prophylactic. I – Hypothesis. J Postgrad Med 1980; 26: 34–8.Google Scholar
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