As the US moves ahead with its ban on synthetic food colours, the focus has shifted to natural food colourants. Annatto, a natural food colouring derived from the seeds of the achiote tree (Bixa Orellana), is widely used in the food industry to impart vibrant hues ranging from yellow to deep orange-red. Despite its relatively low profile, annatto contributes to nearly 70% of natural food colourants globally. Beyond its culinary applications, this plant-based dye has been traditionally used in South and Central America for medicinal, cosmetic, and artistic purposes.What is Annatto?Annatto is a bright orange-red pigment extracted from the seeds of the achiote tree, which thrives in tropical regions. Known by various names such as achiote, bija, urucum, and atsuete, this natural colourant owes its striking shade to carotenoids—plant pigments also found in carrots and tomatoes. Aside from being a food dye, annatto is valued for its slightly sweet and peppery flavour, making it a favoured condiment in many cuisines. It is available in multiple forms, including powder, paste, liquid, and essential oil.What Is Special About Annatto?1. Annatto Is Rich in Antioxidants: This pigment is packed with carotenoids, flavonoids, tocotrienols, and terpenoids—compounds with strong antioxidant properties. These antioxidants help neutralize free radicals, which are linked to cell damage and eventual chronic diseases. 2. Antimicrobial Properties: Several studies suggest that annatto extracts can inhibit the growth of harmful bacteria, including Staphylococcus aureus and Escherichia coli. Additionally, it has been found to prevent fungal contamination in food products, potentially extending their shelf life.3. Potential Cancer-Fighting Effects: Preliminary research indicates that annatto may have anticancer properties. Test-tube studies show that its carotenoids—particularly bixin and norbixin—may suppress cancer cell growth in the liver, pancreas, skin, and prostate. However, further human studies are necessary to confirm these effects.4. Supports Eye Health: Carotenoids in annatto, especially norbixin, have been linked to eye health benefits. Animal studies suggest that norbixin supplementation may reduce the accumulation of compounds associated with age-related macular degeneration (AMD), a leading cause of vision loss in older adults.5. May Promote Heart Health: Annatto contains tocotrienols, a form of vitamin E, which has been associated with improved cardiovascular health. Research suggests that tocotrienols may help protect against age-related heart conditions by reducing oxidative stress and inflammation.Interestingly Annatto was created as a body paintHistorically, annatto was used as a body paint, sunscreen, and insect repellent, as well as a remedy for digestive issues and skin conditions. Today, its primary use remains as a natural food colourant in products such as cheese, butter, margarine, baked goods, and condiments. In some regions, annatto is ground into a paste or powder and combined with spices to enhance the flavour and color of traditional dishes. Its essential oil is also used in aromatherapy due to its potential antimicrobial properties.Safety and Potential Side EffectsAnnatto is generally considered safe for most individuals. However, some people may experience allergic reactions, particularly those sensitive to plants in the Bixaceae family. Symptoms of this allergy include:ItchinessSwellingHivesGastrointestinal discomfortAdditionally, it may trigger symptoms in individuals with irritable bowel syndrome (IBS). Pregnant and breastfeeding women should avoid excessive consumption due to a lack of conclusive safety data. If adverse reactions occur, discontinuing its use and consulting a healthcare provider is recommended.