Effects of Hydroxytyrosol-Rich Olive Polyphenol Dietary Supplement Combined With Mediterranean Diet Adherence on the Cognitive Health of Patients With Mild Cognitive Impairment

Nutrition is an important modifiable risk factor of human cognitive health. Increasing data suggests that certain nutrients or food ingredients, such as plant polyphenols, have the potential to benefit cognitive abilities even in later life. In terms of polyphenols, Hydroxytyrosol (HT) has gained health benefit claims as a potential preventative antioxidant supplementation of neurodegenerative and amyloid-associated diseases while its pharmacological mechanisms suggest protection against cognitive decline. The primary objective of this study will be to evaluate the effects of HT-rich olive juice polyphenol supplementation alongside MeDi adherence compared with placebo alongside MeDi adherence in the prevention of cognitive decline among patients with Mild Cognitive Impairment associated with AD and non-AD pathology.

NCT Number	NCT07672938
Lead Sponsor	Panhellenic Federation of Alzheimer's Disease and Related Disorders Collaborators: Palliative Care Centre "Panagia Glykofilousa", Greek Association of Alzheimer's Disease and Related Disorders, Plastira 65, Thessaloniki 542 50, Greece., Levius Vita Foods srl
Conditions	Mild Cognitive Impairment (MCI)
Enrollment	141 participants
Start Date	2025-03-31
Primary Completion	2026-12 (estimated)
Study Completion	2026-12 (estimated)
Updated on ClinicalTrials.gov	2026-06-30