According to the American Journal of Dermatology, over half of all skin cancers are present on the left side of the body. And this is no coincidence – the left is the driver’s side.

Drivers do not often realize the sun they are soaking up while on the road can contribute to health issues later in life. While this is common for the entirety of the population, it is believed that truck drivers in particular wind up with more forms of skin cancer on their left side than others.

Semi-truck operators can spend up to 14 hours a day exposed to UV rays while driving. To prevent premature aging and heightened growth of cancers, specialists recommend those who drive for a living apply sunscreen or a lotion with an SPF of 30 or above every day, regardless of whether it is sunny or not.

Experts also suggest often checking your body for new spots, moles or wrinkles.