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Are There Foods that Cause Mouth Sores?

Are There Foods that Cause Mouth Sores?

Multiple aspects cause mouth sores, including a wide range of different foods. Learn more about them in this text.

For a very long time, the concept certain foods cause mouth sores was widespread. Nonetheless, these food aren’t actually direct triggers of this condition. What happens is that some increase one’s susceptibility to developing them, or are likely to worsen the symptoms once they are already present. With that in mind, are you focused on knowing what they’re?

To start with, it’s price remembering that these sores are also called ‘aphthous ulcers’ or ‘mouth ulcers’. They’re lesions of lack of continuity of the mucosa of the mouth. They are frequently small, multiple, recurrent, and sometimes very painful.

Their exact cause isn’t established; nonetheless, they’re often related to irritation attributable to sharp teeth, dental appliances, consumption of very popular foods, and smoking. As well as, it has been determined that some foods are likely to exacerbate them. Let’s take a better take a look at what they’re.

What are mouth sores?

Mouth sores are the loss or erosion of the fragile tissue that lines the mouth, also called mucous membrane. They’re small, ulcer-like lesions with a reddened surrounding. At first, they appear like a small vesicular lesion, which then ruptures early.

They sometimes cause pain, but most heal on their very own inside two weeks, leaving no sequelae. They often start as reddish spots that progress to whitish spots after which to painful grayish ulcers. They’re shallow and maintain a reddish, raised halo.

The lesion often appears on the inner surface of the lips; it might probably also occur on the buccal mucosa, the ground of the mouth, or the taste bud.

Characteristically, along with pain, they cause increased sensitivity and even a burning sensation. When accompanied by fever, swollen lymph nodes, or cough, a possible infection must be suspected.

We predict you might also enjoy reading this text: Mouth Ulcers or Sores: Every little thing You Have to Know

Aspects that may cause mouth sores

Although there’s no specific etiology known to cause mouth sores, there are aspects that influence the precipitation or worsening of outbreaks. This encompasses the next:

  • Emotional stress (the primary associated factor)
  • Hormonal changes in women (in premenstrual stages they’re more frequent)
  • Immune system diseases
  • Dietary deficiencies
  • Food allergies
  • Response to viruses or bacteria
  • Family history (there’s genetic origin in recurrent cases of canker sores)
  • Oral injury because of dental care or orthodontic appliances
  • Poor oral hygiene

Are there foods that may cause mouth sores?

In a thesis from the University of Santiago de Compostela, researchers determined that micronutrients and macronutrients within the weight loss plan don’t have any effect on the looks of mouth sores. However, alcoholic beverages and caffeine do seem to extend the danger of this condition.

Nonetheless, there are not any studies that prove that a particular kind of food causes these lesions. For now, some varieties have been identified that precipitate or worsen the symptoms. We reveal them below.

Acidic Fruits

As detailed in an article reported within the National Center for Biotechnology Information, consuming acidic fruits can further irritate the inflamed lining of the mouth. For this reason, they may cause more pain and discomfort within the case of sores. Some examples of those fruits are as follows:

  • Pineapple
  • Oranges
  • Lemons
  • Lime
  • Grapes
  • Strawberries

Tomato and its derivatives

Tomatoes and their derivatives are also characterised by a high level of acidity. For that reason, their consumption is just not advisable until the lesions within the mouth have healed. Eating them can worsen irritation and pain within the mucous membranes of the mouth. It could even result in the looks of latest sores.


Chocolate comprises an alkaloid called obromide that tends to cause mouth sensitivity in some people. A publication via Valley Ridge Dental Centre explains that consumption of this food can trigger the looks of sores on the tongue and inner cheeks of those that have a gentle allergy to the food.

It must be clarified that it isn’t crucial to completely eliminate this food from the weight loss plan. Its intake is just not advisable so long as the sores improve. It also needs to be avoided if there are signs of allergy.

Spicy foods

Spicy food doesn’t cause mouth sores, but it might probably worsen their symptoms. Like acidic foods, they alter the inner lining of the mouth and cause irritation. Curries, hot sauces, jalapenos, and some other spicy foods must be avoided.

Hard or abrasive food

Hard or abrasive foods irritate the soft tissues of the mouth, thus worsening sores. On this group are nuts, carrots, coconut, and radishes, amongst others.


Although conclusive studies are lacking regarding the role of dairy in the looks of mouth sores, it’s believed that some proteins in these foods derive an immune response that manifests with this symptom in some patients. Generally, it’s suggested to discontinue their consumption if there are recurrent mouth sores.

In case studies reported in The Journal of the American Dental Association, the authors described the resolution of recurrent aphthous ulcers after the elimination of dairy products.

Other foods related to mouth sores

  • Flour and its derivatives: Individuals with a gluten allergy may experience this symptom.
  • Coffee and alcohol: Like several of the foods mentioned above, they will be very acidic, plus they are frequently taken in large quantities.
  • Very spicy food: On account of their high salt content, these foods will be disruptive to the mucosa of the mouth.

Vitamins and mineral deficiencies that may cause mouth sores

To avoid mouth sores it’s not only crucial to limit certain foods. It’s advisable to devour various essential nutrients, similar to folic acid, vitamin C, vitamin B, iron, zinc, and calcium.

A deficiency of those can also be related to the looks of oral ulcers. To extend their levels, various foods will be eaten, similar to those listed below.

  • Zinc: oysters, whole grains, and legumes
  • Iron: green vegetables, pork, beans, and lentils
  • Folic acid: bread, rice, chickpeas, beans, fruits, and vegetables
  • Calcium: kale, broccoli, and certain kinds of fish, similar to salmon
  • Vitamin B: pork, yeast, and grains
  • Vitamin C: cabbage, parsley, watercress, papaya, and cauliflower

Like this text? You might also prefer to read: Mouth Piercing Could Have Oral Health Consequences

What to recollect about food and mouth sores

Ultimately, there are several aspects that cause mouth sores, but food itself is just not. In rare cases, certain foods produce allergic reactions that manifest with this symptom. As well as, some precipitate or worsen the discomfort. Subsequently, it’s necessary to know what they’re and to limit their intake within the presence of those lesions.

It must be noted that the treatment of mouth sores is geared toward relieving the symptoms (with anesthetics or local steroids) and stopping recurrences. Often, they don’t require medical attention. Nonetheless, in the event that they don’t improve with time or cause lots of pain, it’s best to seek the advice of a health care provider.

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