Review Article
Issues Raised Involving the Copper Hypotheses in the Causation of Alzheimer's Disease
Table 1
Copper levels in Nor American household drinking water.
| Copper level (ppm) | Number of households | |
| Undetectable 0.01 | | 80 (28%) | 12 | Considered safe | | 68 |
| 0.02 | | 114 (41%) | 36 | Safety unknown | 0.03 | | 16 | 0.04 | | 13 | 0.05 | | 15 | 0.06 | | 12 | 0.07 | | 7 | 0.08 | | 7 | 0.09 | | 8 |
| 0.1 | | 81(29%) | 3 | Cause Alzheimer’s disease in animal models | 0.2 | | 34 | 0.3 | | 14 | 0.4 | | 9 | 0.5 | | 6 | 0.6 | | 2 | 0.7 | | 3 | 0.8 | | 2 | 0.9 | | 2 | 1.0 | | 2 | 1.1 | | 2 | 0.2 | | 1 | 1.3 | | 1 |
| 1.4 | | 5 (1.8%) | 1 | Above EPA limit | 1.8 | | 1 | 1.9 | | 1 | 3.4 | | 1 | 6.0 | | 1 |
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