Adding more colour to your daily meals can do far more than make your plate look appealing. According to UK-based surgeon and health educator Dr Karan Rajan a colourful diet plays a major role in improving gut health supporting immunity and enhancing long-term wellbeing. In a recent social media video Dr Rajan explained that fruits and vegetables of different colours contain unique plant compounds and fibre types that work together to benefit the body.
Dr Rajan emphasises that eating a wide range of plant colours helps deliver a broader mix of protective nutrients. Each colour represents specific plant pigments known as phytonutrients which are linked to different health benefits. Deep blue and purple foods like blueberries contain anthocyanins that support brain and blood vessel health. Red foods such as tomatoes are rich in lycopene which is associated with heart health and a stronger gut lining. Green vegetables including spinach and kale contain pigments linked to eye and cognitive health while raspberries provide compounds that gut bacteria transform into anti-inflammatory substances.
Beyond antioxidants and plant compounds colourful fruits and vegetables also supply a diverse range of dietary fibres. Dr Rajan explains that fibre diversity is just as important as fibre quantity. Different fibres nourish different gut bacteria and ferment in various parts of the colon producing beneficial compounds that support digestion immunity and overall metabolic health. A more varied diet helps maintain a balanced and active gut microbiome which plays a key role in overall wellness.
Dr Rajan concludes that the popular advice to “eat the rainbow” is rooted in real science rather than food trends. A diet lacking colour may leave gut bacteria undernourished while a vibrant plate delivers polyphenols antioxidants and fibre diversity together. Including multiple colours in everyday meals is a simple yet powerful step toward better gut health and long-term vitality.