Explaining Biology on Instagram: "Mouth ulcers (canker sores) are small but painful sores that appear inside the mouth—on the cheeks, lips, tongue, or gums. They usually have a white or yellow center with a red border. While harmless, they can make eating, drinking, and talking uncomfortable. Common causes Accidental injury (biting your cheek, braces) Stress or lack of sleep Nutrient deficiencies (B vitamins, iron, zinc) Spicy or acidic foods Underlying conditions (e.g., celiac disease) The most
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Explaining Biology on Instagram: "Mouth ulcers (canker sores) are small but painful sores that appear inside the mouth—on the cheeks, lips, tongue, or gums. They usually have a white or yellow center with a red border. While harmless, they can make eating, drinking, and talking uncomfortable. Common causes Accidental injury (biting your cheek, braces) Stress or lack of sleep Nutrient deficiencies (B vitamins, iron, zinc) Spicy or acidic foods Underlying conditions (e.g., celiac disease) The most
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