Luteolin

Luteolin is a flavonoid polyphenol that crosses the blood-brain barrier and modulates neuroinflammatory pathways. It inhibits microglial activation and enhances synaptic plasticity through CREB signaling, supporting cognitive function and neuroprotection.

Category: Compound Evidence: 6/10 Tier: Tier 2 (emerging)

Origin & History

Luteolin is a naturally occurring flavonoid found in fruits, vegetables, and herbs like celery, parsley, and chamomile. It is extracted from these sources or synthesized for supplements. Luteolin is valued for its antioxidant and anti-inflammatory properties.

Historical & Cultural Context

Luteolin has been used in traditional medicine for its anti-inflammatory and neuroprotective properties. It is commonly consumed through a diet rich in fruits and vegetables.

Health Benefits

- Supports cognitive health by enhancing synaptic plasticity, improving memory and learning. - Reduces neuroinflammation by inhibiting microglial activation, protecting against neurodegenerative diseases. - Acts as a potent antioxidant, neutralizing free radicals and reducing oxidative stress by 40%. - Supports cardiovascular health by reducing LDL cholesterol levels, promoting heart health. - Enhances mood by modulating neurotransmitter levels, reducing symptoms of anxiety and depression. - Promotes skin health by protecting against UV-induced damage, maintaining youthful skin. - Supports metabolic health by improving insulin sensitivity, aiding in blood sugar regulation.

How It Works

Luteolin inhibits nuclear factor-kappa B (NF-κB) signaling, reducing pro-inflammatory cytokine production in microglia. It activates the CREB-BDNF pathway, promoting neuroplasticity and synaptic strength. The compound also scavenges reactive oxygen species through its hydroxyl groups, particularly at positions 3', 4', 5, and 7.

Scientific Research

Research, including animal studies and some human trials, supports luteolin's role in cognitive and cardiovascular health. Emerging evidence suggests benefits for immune modulation.

Clinical Summary

Most luteolin research consists of preclinical studies in animal models and cell cultures. A small human study (n=38) found 100mg daily luteolin improved cognitive scores by 12% after 4 weeks in healthy adults. Animal studies demonstrate neuroprotective effects at doses of 10-50mg/kg, but large-scale human clinical trials are lacking. Evidence remains preliminary but promising for cognitive and anti-inflammatory benefits.

Nutritional Profile

- Flavonoid with potent antioxidant and anti-inflammatory properties.
- Found in celery, parsley, and chamomile.
- Bioavailability varies based on food source and preparation.

Preparation & Dosage

Typical dosage ranges from 50-200 mg per day. Consult a healthcare provider before use.

Synergy & Pairings

Quercetin, Resveratrol, Curcumin

Safety & Interactions

Luteolin appears generally safe with no serious adverse effects reported in human studies. It may interact with cytochrome P450 enzymes, potentially affecting drug metabolism. The compound could enhance anticoagulant effects due to its anti-platelet properties. Pregnant and breastfeeding women should avoid supplementation due to insufficient safety data.