Saffron as a Potential Therapeutic Agent for Memory Impairments: A Mechanistic Review of Recent Evidence

Abstract

Background: Memory impairment, associated with aging and neurodegenerative disorders, poses a significant global health challenge. Saffron (Crocus sativus L.) and its bioactive constituents have garnered attention for their potential neuroprotective and cognitive-enhancing properties.

Objective: This narrative review aims to examine the current evidence on the neuroprotective mechanisms of saffron in memory enhancement, critically distinguishing between preclinical and clinical findings, and evaluating the translational potential of saffron for memory impairments.

Methods: A comprehensive literature search was conducted across PubMed, Scopus, Web of Science, and Google Scholar up to August 2026. Search terms included combinations of "saffron," "Crocus sativus," "crocin," "safranal," "crocetin," "memory," "cognition," "neuroprotection," and "Alzheimer's disease." Studies were included if they investigated the effects of saffron or its active constituents on cognitive functions and underlying molecular mechanisms in in vitro, animal, or human models.

Key findings: Preclinical evidence robustly demonstrates that saffron and its active compounds exert significant neuroprotective effects through multiple interrelated mechanisms, including scavenging reactive oxygen species, suppressing pro-inflammatory cytokines (e.g., TNF-α, IL-1β), upregulating BDNF, modulating apoptotic proteins (Bcl-2/Bax), and regulating key neurotransmitters (serotonin, dopamine, glutamate). However, the clinical evidence, while promising, remains limited, heterogeneous, and largely devoid of mechanistic validation. Human trials suggest potential benefits on cognitive scores, but these are not yet conclusive.

Conclusion: Saffron demonstrates substantial mechanistic plausibility for memory enhancement derived from preclinical models. However, direct extrapolation to humans requires caution. Further rigorously designed clinical trials with standardized formulations and long-term safety assessments are imperative to translate these mechanistic insights into clinical practice.