Is Flying Really Bad for Your Health? A South African Doctor's Perspective

We all love the thrill of soaring through the skies, but have you ever stopped to consider the potential health impacts of air travel? Recent disruptions to air travel in the US – from crowded airports to severe weather and a shortage of air traffic controllers – haven't dampened Americans' enthusiasm for flying. But what does the science say about the risks? This article, drawing on insights relevant to South African travellers, explores the potential health concerns associated with flying, from radiation exposure to deep vein thrombosis (DVT), and offers practical tips to minimise these risks.
The Hidden Dangers of High Altitude
Flying isn't just about the journey; it's about the environment you're in. At altitude, the air pressure drops significantly. This means there's less oxygen available, and the humidity is incredibly low – often drier than the Sahara Desert! This combination can lead to several health issues.
Radiation Exposure: More Than Just Sunburn
While we're all aware of the risks of sun exposure, flying also exposes us to increased levels of cosmic radiation. This is particularly concerning for frequent flyers. The amount of radiation exposure varies depending on flight duration and altitude, but it's something to be mindful of, especially for those with a family history of cancer. While occasional flights pose minimal risk, cumulative exposure over time can be a factor. Consider using sunscreen with a high SPF and wearing protective clothing on longer flights.
Deep Vein Thrombosis (DVT): The Risk of Sitting Still
Long hours spent sitting still in cramped airplane seats can increase the risk of DVT, a condition where blood clots form in the deep veins, usually in the legs. These clots can be dangerous if they travel to the lungs (pulmonary embolism). Staying hydrated, getting up to walk around the cabin regularly, and performing simple leg exercises while seated can significantly reduce this risk. Compression socks are also a popular preventative measure.
Dehydration and Jet Lag: Common Travel Woes
The dry cabin air and altered sleep patterns associated with crossing time zones can lead to dehydration and jet lag. Drink plenty of water throughout your flight, avoid excessive alcohol and caffeine, and try to adjust your sleep schedule gradually in the days leading up to your trip. Melatonin supplements can also be helpful in combating jet lag, but consult with your doctor before using them.
Other Potential Concerns
Other less common but potential concerns include ear pain due to pressure changes, sinus problems, and even allergic reactions to cleaning products used on the aircraft. Chewing gum or sucking on hard candies can help equalize pressure in your ears. If you have allergies, consider bringing your own cleaning wipes to clean your tray table and armrests.
Tips for a Healthier Flight - Especially for South African Travellers
Considering the distances many South Africans travel, both domestically and internationally, paying attention to these health considerations is crucial. Here’s a quick recap of how to protect yourself:
- Stay Hydrated: Drink plenty of water.
- Move Around: Get up and walk the aisle regularly.
- Exercise Your Legs: Perform simple leg exercises while seated.
- Wear Compression Socks: To improve circulation.
- Protect Yourself from Radiation: Use sunscreen and protective clothing.
- Manage Jet Lag: Adjust your sleep schedule gradually.
- Consult Your Doctor: If you have any pre-existing health conditions or concerns.
While flying does present some potential health risks, being aware of them and taking preventative measures can help ensure a safer and more enjoyable journey. Bon voyage!