As shown in Table 2, twin factor score varied as a function of genetic risk, with the highest factor scores among AD individuals, intermediate factor scores for those who did not have AD but had a cotwin with AD, and the lowest factor scores among pairs concordant for no AD. The lower factor score for non-AD individuals with an AD MZ cotwin compared to AD individuals suggests either overlapping environmental influence on the factor score and AD, or an impact of AD on heaviness of consumption.
