The hip hop community is mourning another loss after it’s been announced that 21-year-old rapper Juice Wrld has died.

According to reports, the “Lucid Dreams” rapper had just arrived in Chicago from California early Sunday morning when he suffered a seizure while walking through Chicago Midway International Airport. When paramedics arrived at the scene, Juice Wrld, real name Jarad Anthony Higgins, was bleeding from the mouth. The rapper was transported to the hospital, where he was pronounced dead a short time later.

The cause of Juice Wrld’s seizure has not been revealed but if you’re an avid traveler, it’s always safe to know the possible health risks involved with flying.

Besides being exposed to germs and possible diseases, below are some other possible travel-related health risks and tips to avoid them.

Traveler’s Thrombosis

If you tend to fly economy or find yourself in cramped conditions in a car or bus for a long period of time, take note. Traveler’s thrombosis, commonly referred to as economy class syndrome, can cause blood clots to form. Those blood clots, which usually begin in your legs, can travel to your lungs and cause a pulmonary embolism.

The clots don’t always present themselves right away. They can form immediately or up to 30 days after travel. To prevent clots it’s suggested that you take time to stretch your legs and walk around the cabin, drink lots of water, wear compression socks or stockings, and if you can afford it, opt for more legroom.

Hearing Loss

The quick change in altitude and heavy noise in the back of the cabin can have negative effects on your hearing. After long fights or frequent flying, many passengers have complained of painful earaches and hearing loss. Although the hearing loss is more often temporary, depending on how long you fly and how far back you’re sitting, it can be permanent.

If you can avoid sitting in the back of the cabin, it’s suggested. Also, chewing gum, drinking lots of water, and wearing earplugs/noise-canceling headphones, can help.

High Blood Pressure

The altitude can do a number on your blood pressure. The higher you fly, the less oxygen your body carries. If you already suffer from high blood pressure, you’re at a greater risk of developing hypertension which can lead to conditions such as heart failure and coronary artery disease.

Again, staying hydrated and walking around the plane will help a lot in this case. If you suffer from high blood pressure, avoid eating salty snacks, avoid drinking alcohol, and don’t forget to pack your medication in your carry-on for use during your flight.

Flying While Pregnant

If you’re not considered a high-risk pregnancy, flying is safe in most cases. Most airlines will allow a mother to fly up until 36 weeks for short distances and 32 weeks for long distances. However, there are some airlines that require a doctor’s approval before flying after 28 weeks. Always make sure to check with your doctor and airline before making travel plans.

Chronic Jet Lag

Most travelers don’t suspect that jet lag can come with health issues, but that’s not the case. For travelers who love to constantly jet-set across the globe, beware. According to studies, consistent disruption of your body’s biological rhythm can lead to a decline in your immune system, memory loss, mood and sleep disorders, and leave you at risk of a heart attack or stroke.

Drugs & Medication

When flying, you’re subjecting your body to lower oxygen at higher altitudes, therefore it’s best to avoid certain drugs and medication before and during your flight. Experts say you should avoid the following medications during air travel: antihistamines (can cause depressed breathing), sleeping pills (lower oxygen levels in the blood and can cause clots), hormone-based medication & contraceptives (some brands are known to increase chances of blood clots).