Preparing Your Health Before Traveling Abroad
Traveling across Asia—whether to Japan, South Korea, China, India, or neighboring ASEAN countries—remains a popular choice among adult and mature travelers. Many journeys are planned for leisure, wellness, or personal enrichment. However, one essential aspect that is often overlooked is pre-travel medical consultation with a travel medicine specialist.
This step is particularly important for individuals as they age or for those living with underlying medical conditions.
Why Adult Travelers Should Consult a Travel Medicine Physician Before Departure
As we age, natural physiological changes occur. The immune system gradually becomes less efficient-a process known as immunosenescence – which reduces the body’s ability to adapt quickly to unfamiliar environments.
In addition, previously controlled or undiagnosed chronic conditions may worsen when exposed to travel-related stressors, such as:
Extreme Weather Conditions
- Adult travelers may have difficulty adjusting to extreme heat, increasing the risk of heatstroke, or extreme cold, which can lead to hypothermia, especially in winter destinations.
Exposure to Endemic Diseases
- Certain destinations carry risks of local infectious diseases, such as Japanese encephalitis or typhoid fever, against which prior immunity may be insufficient without vaccination.
Prolonged Travel Duration
- Long-haul flights or extended periods of immobility significantly increase the risk of deep vein thrombosis (DVT)—a silent but potentially life-threatening condition that occurs more frequently in older adults.
Asian Regions That Require Special Health Awareness
Health risks vary across regions. Below is a summary of key considerations adult travelers should be aware of:
Southeast Asia
Countries: Indonesia, Vietnam, the Philippines, Cambodia, Myanmar
Mosquito-borne Diseases
- Dengue fever is widespread in both urban and rural areas.
- Japanese encephalitis (JE) occurs mainly in semi-rural and rural regions. Infection can result in severe neurological complications or death, and there is no specific antiviral treatment—vaccination is the most effective prevention.
- Malaria risk is generally low in major cities but may exist in forested or border areas.
Gastrointestinal Infections
- Traveler’s diarrhea and hepatitis A are among the most common illnesses, often caused by contaminated food or water.
South Asia
Countries: India, Nepal, Sri Lanka, Bangladesh
Food and Water-borne Diseases
- High risk of typhoid fever and cholera. Vaccination against typhoid and hepatitis A is strongly recommended prior to travel.
Air Pollution and Climate
- Many major cities experience high PM2.5 pollution, which may exacerbate asthma, chronic lung disease, or cardiovascular conditions in older travelers.
High-Altitude Travel
- Travelers planning to visit mountainous regions should be cautious of high-altitude sickness, which can be life-threatening without proper acclimatization.
East Asia
Countries: China, Japan, South Korea, Taiwan
Respiratory Diseases
- Seasonal outbreaks of influenza and pneumonia are common, particularly during winter and early spring. Annual influenza vaccination is strongly advised.
Crowded Urban Environments
- High population density facilitates the spread of infectious diseases, including measles, which may resurge periodically.
Extreme Weather Risks
- Winter: Increased risk of hypothermia in older adults
- Summer: High incidence of heatstroke, particularly in Japan and China during peak summer months
Benefits of Pre-Travel Medical Consultation
A consultation with a travel medicine specialist – ideally 4-6 weeks before departure – provides comprehensive health preparation and peace of mind through:
Fitness to Fly Assessment
- Evaluating whether chronic conditions are well controlled and ensuring safe air travel.
Vaccination Planning
- Administering destination-specific vaccines and updating routine adult immunizations.
Medication & Documentation Planning
- Ensuring adequate medication supply and issuing medical certificates for carrying medications across borders legally, preventing issues at immigration or customs checkpoints.
Recommended Health Screening & Preparation Checklist
To ensure optimal travel readiness, physicians typically recommend the following:
General Health and Laboratory Evaluation
- Physical examination (blood pressure, heart and lung assessment)
- Blood glucose testing (FBS / HbA1c)
- Lipid profile
- Liver and kidney function tests (important for medication metabolism)
- Complete blood count (CBC)
- Electrocardiogram (EKG), when indicated
Chronic Disease Management
For individuals with conditions such as diabetes, hypertension, heart disease, lung disease, or allergies:
- Medication adjustment based on travel activities
- Planning for backup medications and proper storage
- Personalized risk assessment during travel
Vaccinations Commonly Recommended for Travel in Asia
- Influenza vaccine (annually)
- Hepatitis A and B vaccines
- Typhoid vaccine (for selected destinations)
- Tetanus, diphtheria, pertussis (Tdap booster every 10 years)
- Japanese encephalitis vaccine (for specific regions)
- Dengue vaccine (for selected individuals and destinations)
Proper medical preparation does not only reduce health risks—it allows travelers to enjoy their journey with confidence, comfort, and peace of mind.
Medical Article
WATSAPOL GULTAWATVICHAI, M.D.
Advance Diagnostic Centre (Check-up)
Specialty
REVENTIVE MEDICINE,TRAVEL MEDICINE
Travel Medicine Package
Travel Medicine Consultation Service by Physicians and Nurses: Pre, During, and Post-Travel. Designed for patients requesting a comprehensive health review before their trip.
WATSAPOL GULTAWATVICHAI, M.D.
Advance Diagnostic Centre (Check-up)
Specialty
REVENTIVE MEDICINE,TRAVEL MEDICINE
Language
Thai, English
– PREVENTIVE MEDICINE
– TRAVEL MEDICINE
Gultawatvichai W, Matsee W, Pisutsan P, Kusolsuk T,
Silachamroon U, Mansanguan C, Lawpoolsri S, Flaherty GT,
Piyaphanee W. (2023). Prevalence of hypertension among
travelers and stability of blood pressure control during travel:
a cross-sectional descriptive study and prospective cohort
study. Tropical Diseases, Travel Medicine and Vaccines,
9(1), 13.
DOI: 10.1186/s40794-023-00199-5
– 2017 Doctor of Medicine, Thammasat University
– 2024 Master of Science in Clinical Tropical Medicine, Mahidol
University
2023 Thai Board of Preventive Medicine, Travel Medicine, Mahidol University
Diploma in Sexual Medicine
Diploma in Clinical Sexology
Mini Management in Lifestyle Medicine
Doctor’s Schedule
| Day | Time | Location |
|---|---|---|
| Tuesday | 08:00 – 15:00 | Advance Diagnostic Centre (Check-up) |
| Saturday | 08:00 – 12:00 | Advance Diagnostic Centre (Check-up) |