A female graduate student from the French Medical School further pointed out in her thesis that a typical French kiss can cause one to swallow 250 bacteria. Just how many problems can a kiss cause? In a mere 45-second passionate kiss, besides burning 12 calories, what other health-related chain reactions might occur?
Beware the Deadly Hazards of French Kissing (Public Health Network)
I. Periodontal Issues
The oral cavity is the body's most fertile breeding ground for bacteria. While most pathogens are neutralized by stomach acid, numerous surviving bacteria still pose health concerns.
During passionate kissing, the state of ecstasy often causes momentary loss of rationality. In such moments, the most common mishap is accidentally biting or sucking the other person's mouth.Xie Yinghua points out that this goes beyond mere saliva exchange—it enters a realm where blood and fluids mix. Especially if your mouth already has wounds, this can easily trigger periodontal disease and gum inflammation. Therefore, it's advisable to minimize intimate contact with others when oral wounds are present.
II. Eardrum Rupture
Even without kissing the ear itself, overly passionate or intense kissing can create pressure imbalances in the eardrum. Sudden fluctuations in pressure may cause cracks or even rupture the eardrum.
While this type of traumatic eardrum rupture may cause temporary hearing loss of about 20 to 30 decibels, it can heal on its own with medical treatment. Still, it's best to keep your emotions in check and avoid covering your partner's ears with both hands during kissing. Give each other some breathing room.
III. Life-Threatening Allergies
Is it really that serious? How could a simple kiss land someone in the ER? It happens when your partner has consumed an allergen you're sensitive to.
When eating, food particles inevitably linger in the mouth. Without proper oral hygiene, these residues require over 8 hours to fully break down. Therefore, after meals, it's best to brush your teeth or rinse your mouth before kissing, or switch to kissing cheeks instead.
Dr. Robert Wood of Johns Hopkins Medical Center further advises that if you experience breathing difficulties or physical discomfort during or after kissing, seek medical attention promptly—even if you've never had such symptoms before.
IV. Herpes Virus
If you suddenly develop painful, itchy blisters around your mouth that multiply when squeezed, you've likely contracted herpes through kissing.
Generally, herpes simplex is more common in young children with weaker immune systems. These blisters and mouth ulcers typically heal within a week of treatment. However, the stubborn herpes virus remains dormant in your body, waiting to reactivate when your immunity weakens.
Dr. Anna Wald from the University of Washington advises: If you notice small blisters or sores around your partner's mouth, avoid kissing them. Even after they've healed, they can still transmit the herpes virus to you—though the amount of virus spread is significantly reduced!