What you need to know about sun exposure and skin care in higher elevations
IDAHO FALLS, Idaho (KIFI) — With the first day of summer quickly approaching, it's time to think more about sunscreen. This creamy solution is often one of the only barriers between our skin and harmful UV (ultraviolet) rays, making it even more important in higher elevations.
According to an article called Sun Protection at High Altitude, UV exposure at high elevations is significantly greater than at sea level. Local experts echo this statement. Jacob Tebbs is a PA (physician assistant) at High Valley Dermatology in Idaho Falls. He explains what the increased risk looks like in our area.
"As you go up about 1000ft in elevation, there's about a 10 percent increase in the amount of UV light that you receive," he said. "So, if you're at sea level compared to Idaho Falls, it's about 50 percent more UV light."
The number of patients he sees with sun-related skin issues is significant. He equates this, in part, to the environment Idaho offers for outdoor activities like camping, hiking and farming. But, what makes UV rays so harmful?
According to the American Cancer Society, "Higher-energy UV rays are a form of ionizing radiation. This means they have enough energy to remove an electron from (ionize) an atom or molecule. Ionizing radiation can damage the DNA (genes) in cells, which in turn may lead to cancer."
If you are worried about skin cancer, Tebbs says to look for the ABCDE's of melenoma, a cancerous formation that usually appears on the skin's surface as a mole or dark spot.
A – Asymmetry
B – Border
C – Color
D – Diameter
E – Evolving
The good news is that sunscreen with a higher sun protective factor (SPF) can greatly reduce exposure and help prevent skin damage. The SPF number on your sunscreen should correlate with the amount of time you're outside.
"When you're applying an SPF of 15, it takes 15 times as long to sunburn as if you didn't have that on." Tebbs said. "It's more of a measurement of just how long it will take you to sunburn. In general, here in Idaho Falls, we would recommend an SPF of 50 or better when it comes to sunscreen."
To improve your skin's chances of staying healthier longer, you should choose a quality-brand sunscreen and plan to bring it with you on your next warm-weather adventure. If you need help choosing a sunscreen that best fits your needs, you can visit the Environmental Working Group's free guide to choosing a safer sunscreen.
