No, canker sores are not caused by kissing.
Understanding Canker Sores
Canker sores, also known as aphthous ulcers, are small, painful sores that develop inside the mouth. They can appear on the tongue, inner cheeks, or gums.
How do canker sores differ from cold sores?
It is important to distinguish canker sores from cold sores. According to the provided reference:
- Canker Sores: Always found inside the mouth.
- Cold Sores: Usually appear outside the mouth, around the lips, chin, or nostrils.
Transmission of Canker Sores
According to the reference, "You can't get canker sores by sharing food or kissing someone." Therefore, canker sores are not contagious. While the exact cause of canker sores isn't fully understood, they are not transmitted through saliva or close contact.
Possible Causes of Canker Sores
While kissing is not a cause, other factors are believed to contribute to the development of canker sores:
- Minor mouth injuries (e.g., from dental work or aggressive brushing)
- Food sensitivities
- Stress
- Hormonal changes
- Vitamin deficiencies
Conclusion
Canker sores are not contagious and cannot be spread through kissing or sharing food.
