Thando siziba
Health and environment reporter
Tuèsday 23 September 2025
www.zimgbcnews.co.zw
Kissing is often seen as a sign of affection, intimacy, and emotional connection. But health experts are now reminding the public that excessive or casual kissing with multiple partners can pose serious hygiene and health risks.
According to recent studies, the human mouth harbors over 700 types of bacteria (Dewhirst et al., 2010), many of which can be transferred through saliva during kissing. While not all of these microbes are harmful, some can lead to infections especially when kissing multiple individuals increases the likelihood of exposure to new and potentially dangerous strains.
What Can Be Transmitted Through Kissing?
- Herpes Simplex Virus (HSV-1)
- This virus causes cold sores and is highly contagious even when sores are not visible. Studies show that 67% of the global population under 50 may carry HSV-1 (World Health Organization, 2022).
- Mononucleosis (“Kissing Disease”)
- Caused by the Epstein-Barr virus (EBV), this illness spreads easily through saliva and causes fever, sore throat, and fatigue (CDC, 2023).
- Gum Disease (Periodontitis)
- While not considered a classic “infectious disease,” gum disease can be aggravated by the transmission of harmful bacteria such as Porphyromonas gingivalis from one person’s mouth to another (Van Winkelhoff et al., 2000).
- Cytomegalovirus (CMV)
- Often harmless in healthy individuals, CMV can be risky for pregnant women and immunocompromised people. It spreads via saliva, urine, and other bodily fluids (CDC, 2024).
- Helicobacter pylori (H. pylori)
- Though primarily known for causing stomach ulcers, this bacterium can be present in saliva and transferred orally, increasing the risk of gastrointestinal infections (Khalifa et al., 2010).
Risk Increases with Number of Partners
Public health experts emphasize that the more people you kiss, the greater the chance of encountering new pathogens. This is especially true in environments like parties, clubs, or festivals where casual kissing is more common.
Preventive Measures
- Maintain good oral hygiene: Brushing, flossing, and regular dental checkups can reduce the risk of passing on harmful bacteria.
- Avoid kissing when sick or if you have visible sores.
- Limit the number of intimate partners, especially in short time frames.
- Be cautious with babies, the elderly, or immunocompromised individuals, as they are more vulnerable to infections.
While kissing is a natural and often beautiful form of connection, it’s essential to recognize the health risks it can pose — particularly when practiced with multiple partners without precaution. Maintaining oral hygiene, being mindful of one’s health status, and understanding what can be transmitted through saliva are key steps to stay safe.
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