Nicknamed the “kissing disease,” mononucleosis is a viral infection caused by the Epstein-Barr virus (EBV). It spreads easily through saliva, which makes tongue kissing a prime method of transmission. Symptoms include severe fatigue, fever, sore throat, and swollen lymph nodes. Mono can last for weeks or even months in some cases. Since there’s no cure, prevention through healthy kissing habits is key.
3. Respiratory Infections

How to Stay Safe While Kissing
- Communicate: Talk openly with your partner about any infections or concerns.
- Practice good oral hygiene: Brush, floss, and use mouthwash regularly.
- Avoid kissing when sick: This includes visible cold sores, fever, or flu symptoms.
- Get vaccinated: Especially for preventable diseases like HPV.
- Limit your number of partners: Reducing exposure helps lower your risk.