# Anti‐Neuroinflammation Activity of Essential Oils and Fatty Acids

## TL;DR

This paper reviews how essential oils and fatty acids may help reduce brain inflammation linked to diseases like Alzheimer's and Parkinson's.

## Contribution

The paper highlights the novel use of plant-derived essential oils and fatty acids as multi-target agents for combating chronic neuroinflammation.

## Key findings

- Essential oils with terpenoids reduce microglial activation and cytokine production by inhibiting NF-κB and MAPK signaling.
- Omega-3 fatty acids support blood-brain barrier integrity and reduce oxidative stress via Nrf2-mediated pathways.
- Preclinical studies show these compounds reduce Aβ plaques and protect neurons in models of AD and PD.

## Abstract

Neuroinflammation plays a pivotal role in the pathogenesis of neurodegenerative disorders, including Alzheimer's disease (AD) and Parkinson's disease (PD). Current pharmacological interventions, such as NSAIDs and corticosteroids, are limited by systemic toxicity and insufficient efficacy in targeting chronic neuroinflammatory processes. Emerging evidence highlights the therapeutic potential of plant‐derived essential oils and fatty acids in modulating neuroinflammatory pathways through multi‐target mechanisms. Essential oils enriched with terpenoids (e.g., carnosic acid, eugenol) attenuate microglial activation and cytokine production by suppressing NF‐κB and MAPK signaling, while polyunsaturated fatty acids (PUFAs), particularly omega‐3, enhance blood–brain barrier integrity and promote the resolution of oxidative stress via Nrf2‐mediated antioxidant defenses. Preclinical studies demonstrate that these compounds reduce Aβ plaque burden, protect dopaminergic neurons, and ameliorate cognitive deficits in animal models of AD and PD. This review provides a comprehensive evaluation of the multifaceted roles of essential oils and fatty acids in combating neuroinflammation and their potential as therapeutic agents. Furthermore, this sets a foundation for further research into translating these natural products into clinical applications in modulating neuroinflammation and related disorders.

Neuroinflammation plays a pivotal role in the pathogenesis of neurodegenerative disorders, including Alzheimer's disease (AD) and Parkinson's disease (PD). Current pharmacological interventions, such as NSAIDs and corticosteroids, are limited by systemic toxicity and insufficient efficacy in targeting chronic neuroinflammatory processes. Emerging evidence highlights the therapeutic potential of plant‐derived essential oils and fatty acids in modulating neuroinflammatory pathways through multi‐target mechanisms. Essential oils enriched with terpenoids (e.g., carnosic acid, eugenol) attenuate microglial activation and cytokine production by suppressing NF‐κB and MAPK signaling, while polyunsaturated fatty acids (PUFAs), particularly omega‐3, enhance blood–brain barrier integrity and promote the resolution of oxidative stress via Nrf2‐mediated antioxidant defenses. Preclinical studies demonstrate that these compounds reduce Aβ plaque burden, protect dopaminergic neurons, and ameliorate cognitive deficits in animal models of AD and PD. This review provides a comprehensive evaluation of the multifaceted roles of essential oils and fatty acids in combating neuroinflammation and their potential as therapeutic agents. Furthermore, this sets a foundation for further research into translating these natural products into clinical applications in modulating neuroinflammation and related disorders.