Authors Year Country Reference Number of subject Age range
Martyn et al. 1989 UK [23] 666 AD 40-69 years
519 other dementia
Flaten 1990 Norway [25] 14,727 dementia N/A
Frecker 1991 Canada [26] 568,345 death >70 years 
399 dementia
Neri and Hewitt 1991 Canada [27] 2,344 AD ≥55 years
2,232 controls
Forbes et al. 1991 
1992 
1994
Canada [28]
[119]
[120]
782 people 45 years at baseline
Jacqmin et al.
Jacqmin- Gadda et al.
1994 
1996
France [121]
[30]
3,777 people ≥65 years
McLachlan et al. 1996 Canada [122] 119 AD N/A
51 controls
Gauthier et al. 2000 Canada [123] 68 AD ≥70 years
68 controls
Rondeau et al. 2009 France [31] 461 dementia incl. 364 AD ≥65 years
Table 3: Epidemiological reports showing a positive risk of Al-containing water for cognitive impairment, dementia, and AD.
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