There is no definitive cause for canker sores. Many have considered that a popular chemical found in toothpaste, sodium lauryl sulfate, causes them, but that would not be supported because not every individual who brushes their teeth ends up developing a canker sore. With that in mind, while there is no one cause that can linked to canker sores, there are various components that go into their development than one should consider. What follows are 10 possible causes of cankers sores that have been noticed in different people through the ages.

Top Ten Canker Sore CausesAllergies – Surprisingly, there are quite a few various allergens that have been attributed to the development of canker sores. As mentioned, sodium lauryl sulfate is one popular culprit. Other possibilities include various types of medications, fruits of the citrus variety, tomatoes, various types of preservatives, dyes found in food, chocolate, gluten products, coffee, and nuts. Be mindful that these foods in and of themselves do not necessarily cause canker sores, but they can trigger them in certain people. So, if you have a tendency to develop such sores, this list can you help you try to pinpoint what is happening.

Stress – Stress has been found to be a major contributor to canker sores. It is assumed that this occurs because stress causes the immune system in the body to become weak. When this happens, it is more likely that canker sores can develop.

Trauma – Certain types of trauma have also been known to play a role in the development of canker sores. Specifically, if the lining that is over the deep tissues of the mouth become broken, there is an increased likelihood that canker sores will develop in various individuals. Such trauma can occur as a result of many different types of events, such as consuming foods that have sharp ridges. This includes crackers and chips, or using toothbrushes that have hard bristles. 

Top Ten Canker Sore CausesGenetics – If both parents have developed canker sores at some point, then there is a roughly 90% likelihood that you will develop them as well. In short, genetics can play a role in the development of canker sores.

Compromised Immune System – Some individuals that have a weakened immune sores have a higher likelihood of developing canker sores, such as people who have contracted AIDS.

Infectious Organisms – There are various types of organisms that have been known to cause canker sores in certain individuals.

Nutritional Deficiencies – People who are deficient in certain vitamins and minerals are believed to be at a higher risk of developing canker sores. The primary culprits include iron, folic acid, zinc, and Vitamin B.

Smoking Cessation – Individuals who have smoked for a long time, and they suddenly stop, may develop canker sores. By all means, however, this does not mean that you should keep smoking!

Hormones – Certain types of hormones can also impact the likelihood of developing canker sores.

Abnormalities in the Blood – Various types of blood abnormalities have been found to cause canker sores. One example is cyclic neutropenia.



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