Why Brushing Teeth Makes Me Feel Nauseous: the Causes - Otolaryngology

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Feeling nauseous after brushing your teeth can be a distressing experience, and it’s important to understand the potential causes behind this reaction. There are several factors that could contribute to this sensation, particularly in the context of your medical history and smoking habits.

1. Gag Reflex: One of the most common reasons for feeling nauseous after brushing your teeth is an overactive gag reflex. This reflex can be triggered when the toothbrush touches the back of your tongue or throat. If you are brushing too vigorously or using a toothbrush that is too large, it may stimulate this reflex, leading to feelings of nausea or even vomiting.

2. Oral Hygiene Products: The toothpaste you are using may also play a role. Some people are sensitive to certain ingredients in toothpaste, such as strong flavors (like mint) or foaming agents. If you find that you feel nauseous after using a specific brand or type of toothpaste, consider switching to a milder, non-foaming toothpaste.

3. Postnasal Drip: Given your symptoms of phlegm and frequent coughing, postnasal drip could be contributing to your nausea. When mucus drips down the back of your throat, it can cause irritation and a gagging sensation, especially when brushing your teeth. This is often exacerbated by allergies, sinus infections, or respiratory issues, which may be more prevalent in smokers.

4. Respiratory Issues: Your history of smoking and the findings from your X-ray indicating mild emphysema and bronchial issues could also be contributing factors. Smoking can lead to chronic bronchitis and other respiratory problems, which may cause increased mucus production and irritation in the throat. This irritation can be heightened during activities like brushing your teeth, leading to feelings of nausea.

5. Anxiety and Stress: If you experience anxiety or stress, this can also manifest physically, including during routine activities like brushing your teeth. The act of brushing may become associated with feelings of discomfort or nausea, creating a cycle that reinforces the sensation.

6. Gastroesophageal Reflux Disease (GERD): If you have a history of acid reflux or GERD, the act of brushing your teeth could potentially trigger nausea. The position of your body while brushing, combined with the pressure on your abdomen, may exacerbate reflux symptoms, leading to nausea.


Recommendations:
- Modify Your Technique: Try using a smaller toothbrush head and be gentle when brushing the back of your mouth. Consider brushing your teeth at a different angle to avoid triggering your gag reflex.

- Switch Toothpaste: Experiment with different brands or types of toothpaste, particularly those designed for sensitive mouths.

- Stay Hydrated: Ensure you are drinking enough water throughout the day, as dehydration can exacerbate feelings of nausea.

- Consult a Healthcare Provider: Given your smoking history and respiratory issues, it would be wise to consult with a healthcare provider. They can assess your symptoms in the context of your overall health and may recommend further evaluation or treatment options.

- Address Respiratory Health: If postnasal drip or respiratory issues are significant, consider seeing an ENT specialist or a pulmonologist. They can provide targeted treatments to alleviate your symptoms.

In summary, while feeling nauseous after brushing your teeth can be caused by several factors, addressing your oral hygiene technique, the products you use, and your overall respiratory health may help alleviate this discomfort. If symptoms persist, seeking professional medical advice is crucial for proper diagnosis and management.