South Korea is generally considered a safe destination for travelers, with a low crime rate and efficient public services. However, like any other destination, there are a few health and safety concerns that travelers should be aware of:

1. Air Quality: In major cities like Seoul, air pollution can be a concern, especially during certain times of the year. It's advisable to check the air quality index and take precautions such as wearing a mask if air pollution levels are high.

2. Natural Disasters: South Korea is prone to natural disasters such as typhoons, heavy rains, and earthquakes. Travelers should stay informed about weather forecasts and follow the advice of local authorities in case of any severe weather warnings.

3. Traffic Safety: South Korea has a high level of traffic congestion, especially in urban areas. Pedestrians should exercise caution when crossing the street, and drivers should be aware of aggressive driving behaviors and adhere to traffic regulations.

4. Food and Water Safety: Generally, food and water hygiene standards are high in South Korea. However, travelers should still exercise caution when consuming street food and ensure that water is safe for drinking, especially in rural areas.

5. Healthcare: South Korea has excellent healthcare facilities with modern equipment and well-trained medical professionals. However, healthcare services can be expensive for travelers without adequate insurance coverage. It's advisable to have travel insurance that covers medical emergencies.

6. Infectious Diseases: South Korea has a well-developed healthcare system and stringent measures to control infectious diseases. However, travelers should still take precautions such as getting vaccinated before traveling and practicing good hygiene to prevent the spread of illnesses.

7. North-South Relations: While tensions between North and South Korea have eased in recent years, the Korean Peninsula remains geopolitically sensitive. Travelers should avoid engaging in any activities that could be perceived as provocative near the border areas and follow any travel advisories issued by their government.