He added: "It was the potency of the statins rather than their solubility (lipophilic or hydrophilic) which was a major determinant in reducing dementia. High potency statins such as atorvastatin and rosuvastatin showed a significant inverse association with developing dementia in a dose-response manner. Higher doses of high potency statins gave the strongest protective effects against dementia."Yes, well, this result is very likely not due to any lipid controlling effects.
Statins are antimicrobial. They also seem to reduce periodontal disease.