Luteolin is a naturally occurring flavonoid found in a wide range of plants, herbs, fruits, and vegetables, and it has received increasing attention within modern nutritional science and integrative medicine. The compound is produced by plants as part of their own defense against UV radiation, oxidative stress, and microbial impact, and these protective properties may also support the body's biological regulatory systems when luteolin is consumed through the diet or as a dietary supplement. Luteolin belongs to the flavone group of flavonoids and is chemically known as 3’,4’,5,7-tetrahydroxyflavone with the molecular formula C15H10O6. Natural sources include celery, parsley, thyme, oregano, broccoli, onion, bell peppers, citrus fruits, and the plant Reseda luteola, which has historically been used for textile dyeing since antiquity.
Modern research shows that luteolin has a broad range of biological activities, particularly related to antioxidant, anti-inflammatory, neuroprotective, and immunomodulatory processes. In this article, we have used and built upon publicly available research, including reviews of scientific databases such as PubMed, Google Scholar, the Cochrane Library, the EFSA register, and assessments from the Norwegian Food Safety Authority. In addition, we have drawn inspiration from Life Extension Foundation's professional article “What Are the Benefits of Bee Propolis?” (Mia Syn, MS, RD, scientifically reviewed by Michael A. Smith, MD, December 2025). Although this article primarily concerns propolis, luteolin is a key flavonoid in several types of propolis, and there is considerable overlap in the biological mechanisms of action between these natural substances.
🛡️ Antioxidant and inflammation balance
Luteolin is well documented as a powerful antioxidant that helps neutralize free radicals and support the body's own antioxidant systems, including glutathione, superoxide dismutase, and catalase. At the same time, luteolin modulates inflammatory signaling pathways such as NF-κB, MAPK, and JAK/STAT, and may help reduce overactive production of pro-inflammatory cytokines such as TNF-α, IL-6, IL-1β, and COX-2. This regulatory effect makes luteolin particularly interesting in the context of chronic low-grade inflammation, which is a known underlying factor in a range of lifestyle- and age-related conditions.
🧠 Neuroprotective and cognitive mechanisms
Research indicates that luteolin may support brain health by reducing neuroinflammation, protecting nerve cells against oxidative stress, and influencing mechanisms related to amyloid-β accumulation and microglial activation. Preclinical studies have shown potential for supporting memory, mental clarity, and reducing so-called “brain fog.” Luteolin has also been studied for its interaction with adenosine receptors, which may explain observations related to improved sleep quality and an increased proportion of deep non-REM sleep in certain models.
⚖️ Immune balance, mast cells, and histamine
A distinctive feature of luteolin is its ability to stabilize mast cells and reduce the release of histamine and other inflammatory mediators. This makes luteolin of interest in the context of allergic reactions, hypersensitivity, and immunological imbalance. Studies show that luteolin may help modulate the Th1/Th2 response and support a more balanced immune function without acting immunosuppressively.
🧐 Antimicrobial and antiviral activity
In laboratory and animal studies, luteolin has shown activity against several bacteria, viruses, and fungi, including Staphylococcus aureus, herpes viruses, influenza viruses, and certain RNA viruses. The effect appears to be related to both direct inhibition of microbial enzymes and indirect support of the host immune response. Synergistic effects have also been observed when luteolin is combined with conventional antimicrobial strategies in preclinical models.
🧬 Cellular regulation and cancer-related research
Luteolin has been extensively studied in preclinical cancer research, where it has shown the ability to influence several key mechanisms in the cell life cycle. This includes the induction of programmed cell death (apoptosis), inhibition of uncontrolled cell proliferation, modulation of angiogenesis, and reduction of metastatic potential through effects on signaling pathways such as PI3K/Akt, Wnt/β-catenin, and mTOR. It is important to emphasize that these findings mainly come from cell and animal studies, and that luteolin is not approved as a treatment for or prevention of cancer. However, the research illustrates how natural flavonoids may support the body's own regulatory mechanisms at the cellular level.
❤️ Cardiovascular and metabolic support
Epidemiological studies have shown an association between high intake of luteolin-rich foods and a lower risk of cardiovascular disease, type 2 diabetes, and metabolic syndrome. Luteolin has been investigated for its ability to support normal blood pressure regulation, lipid profile, and insulin sensitivity, as well as protect tissues against oxidative damage in ischemia and reperfusion conditions.
🌿 Bio-Luteolin – improved bioavailability
A known limitation of regular luteolin is low bioavailability, due to poor water solubility and rapid metabolism in the intestine and liver. Bio-Luteolin is an advanced formulation developed to significantly increase absorption and systemic availability. This form combines luteolin (often from Japanese sophora) with specific galactomannans from fenugreek seeds, which protect the molecule during digestion and improve absorption. Studies indicate that Bio-Luteolin may provide up to 14 times higher bioavailability than unformulated luteolin, allowing low doses to provide biological exposure equivalent to significantly higher amounts of standard luteolin. Bio-Luteolin is developed for daily use and fits well into strategies for healthy aging, cellular health, and biohacking.
Technical details and use
Luteolin is typically used in capsule or powder form as a standardized plant extract. Common doses in supplements are often between 50 and 100 mg daily, while Bio-Luteolin is used in lower doses due to increased absorption. The products are normally vegetarian, gluten-free, and non-GMO. Luteolin is classified as an "other substance" in food supplements in Norway and the EU, without approved specific health claims from EFSA.
Precautions and disclaimer
Food supplements with luteolin are intended as a supplement to a varied diet and a healthy lifestyle. The effect may vary from person to person. The recommended daily dose should not be exceeded. Pregnant or breastfeeding women and people using medication should consult healthcare professionals before use. Uno Vita AS does not claim that the products we mention can diagnose, treat, prevent, or cure disease. The information is intended solely as general knowledge sharing.
Freedom of expression and right to information
Uno Vita communicates publicly available research and professional knowledge in line with freedom of expression as anchored in Section 100 of the Constitution, Article 19 of the UN Universal Declaration of Human Rights, Article 19 of the ICCPR, and the First Amendment of the United States.
Scientific references
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Lin Y et al. Luteolin, a flavonoid with potential for cancer prevention and therapy. Current Cancer Drug Targets, 2008
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Aziz N et al. Anti-inflammatory effects of luteolin. Journal of Ethnopharmacology, 2018
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Luo Y et al. Luteolin and cardiovascular protection. Frontiers in Pharmacology, 2017
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Yao J et al. Luteolin and neuroinflammation. Neurochemical Research, 2018
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Zhang Y et al. Dietary luteolin intake and mortality. Diabetology & Metabolic Syndrome, 2023
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Gendrisch F et al. Luteolin and skin aging. BioFactors, 2021
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Raina R et al. Luteolin and apoptosis in cancer cells. Oncology Letters, 2021
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Franza L et al. Luteolin, inflammation and gut microbiota. BioFactors, 2021
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Mia Syn, MS, RD; Michael A. Smith, MD. What Are the Benefits of Bee Propolis? Life Extension Foundation, 2025
