Smile MonthBetween 11 May and 11 June 2026, the Oral Health Foundation will raise awareness of important oral health issues. Join the nation's biggest oral health campaign and help bring a smile to millions of people. This year is our biggest year yet as we get ready to celebrate the 50th anniversary of Smile Month, and we need your smiling faces to make it happen. Join our Smile Wall using the buttons below. See our online wall Add your smile There are lots of different activities you can take part in for Smile Month. Have a look at the full list here. Take part The Smile Wall About the campaign What is Smile Month? History of the campaign Why it matters today Who takes part 50 years of smiles The story of 50 years How smiles have changed Half a century of healthy smiles Our vision for the next 50 Research findings Why smiles matter Better oral health Confidence & wellbeing Social and life impact Everyday quality of life Who's behind it Oral Health Foundation Our sponsors Take part Activities For dental teams For schools & youth groups In workplaces For families and communities View all Downloads Logo & email signature Social media Digital guides Learning resources Facts and talking points For dental professionals (DCPs) Shop Fundraising Donate Set up your fundraising page Fundraising ideas Taking action Wall of Smiles Smile Month Prevention Pledge Your oral health Daily habits Brushing basics Cleaning between teeth Why mouthwash matters Diet Diet and oral health Best tooth-friendly foods Foods and drinks to avoid The impact of sugar The role of hydration Children's teeth First teeth School years Teen habits Making brushing fun All ages Young adults Adults Older adults Changes to watch for Common mistakes Brushing too hard Rinsing with water Grazing all day Ignoring bleeding gums Oral Health Foundation Home The link between diet and a healthy smile What you eat plays a huge role in the health of your teeth and gums. A balanced diet packed with essential nutrients helps keep your smile strong, while poor food choices can lead to tooth decay, gum disease, and enamel erosion. Understanding how nutrition affects your oral health is key to maintaining a confident, healthy smile for life. How diet affects your teeth and gums Every time you eat or drink, your mouth goes through a cycle that can either protect or damage your teeth. Here’s how: Acid attacks: Sugary and starchy foods fuel bacteria in your mouth, producing acids that weaken enamel and cause cavities. Nutrient deficiencies: A lack of essential vitamins and minerals can make gums more prone to infection and slow down the body’s ability to repair damaged tissue. Saliva production: A healthy diet stimulates saliva, which washes away food particles, neutralises acids, and helps remineralise enamel. Key nutrients for a healthy smile To keep your teeth and gums in top shape, make sure your diet includes: Calcium & phosphorus Why? It strengthens enamel and protects against erosion. Found in: Dairy (milk, cheese, yoghurt), leafy greens, almonds, tofu, and fish. Vitamin D Why? It helps the body absorb calcium, reducing the risk of weak or brittle teeth. Found in: Fatty fish, egg yolks, fortified dairy products, and sunlight exposure. Vitamin C Why? It supports gum health and helps prevent gum disease. Found in: Citrus fruits, bell peppers, strawberries, and broccoli. Fibre & crunchy foods Why? It stimulates saliva production and naturally cleans teeth. Found in: Apples, carrots, celery, nuts, and whole grains. Water Why? It keeps your mouth hydrated, flushes away food particles, and prevents dry mouth. Best choice: Plain water, especially fluoridated water. Eating habits for a healthier smile Limit snacking: Frequent eating gives bacteria more chances to produce harmful acids. Choose whole foods: Processed foods often contain hidden sugars and acids that damage teeth. Rinse after meals: Drinking water or chewing sugar-free gum can help clean your mouth between meals. Eat a variety of nutrients: A well-balanced diet keeps your whole body – and your mouth – in peak condition. The bottom line Your diet is just as important for your smile as your overall health. By making smart food choices and prioritising key nutrients, you can keep your teeth strong, your gums healthy, and your smile shining. Want to learn more about smile-friendly foods? Check out our Best Foods for Teeth guide! Manage Cookie Preferences