Why Mosquitoes Love Runners So Much

There’s a scientific reason you get bitten more than sedentary folks do.

If you’re anything like us, mosquitos love you. You could be sitting by the pool with a few of your friends, and by the time you all go inside, you’re scratching away at your skin while everyone else managed to escape unscathed. So what’s the deal?

It’s not just in your head: There is a reason why you attract mosquitoes more than others—you’re a runner. But don’t panic. That doesn’t mean you’re doomed to a life of itchy, welt-covered skin every summer.

There are things you can do to limit the amount of bites you get, or make the ones you do get feel a little better. Here, we tapped Jonathan Day, Ph.D., a mosquito researcher and professor of medical entomology at the University of Florida and Daniel M. Pastula, M.D., M.H.S., associate professor of neurology, infectious diseases, and epidemiology at the University of Colorado School of Medicine in Aurora, Colorado, to find out why you get bitten so damn much—and what you can do about it.

Why Do Mosquito Bites Itch?

The itching and swelling that accompanies a bite occurs when your immune system responds to something it doesn’t recognize.

“When a mosquito bites, the first thing it does is produce a little bit of its saliva, which contains proteins that your immune system sees as a foreign body, and mounts an immediate response to attack those proteins,” Day said. “That response tends to involve histamine that attacks those proteins, and that causes swelling, redness, and itching at the site.”

Find yourself running with the mosquitoes? Continue reading Danielle Zickl's article here.

Runner's World: Why Mosquitoes Love Runners So Much

Why Mosquitoes Love Runners So Much

There’s a scientific reason you get bitten more than sedentary folks do.

If you’re anything like us, mosquitos love you. You could be sitting by the pool with a few of your friends, and by the time you all go inside, you’re scratching away at your skin while everyone else managed to escape unscathed. So what’s the deal?

It’s not just in your head: There is a reason why you attract mosquitoes more than others—you’re a runner. But don’t panic. That doesn’t mean you’re doomed to a life of itchy, welt-covered skin every summer.

There are things you can do to limit the amount of bites you get, or make the ones you do get feel a little better. Here, we tapped Jonathan Day, Ph.D., a mosquito researcher and professor of medical entomology at the University of Florida and Daniel M. Pastula, M.D., M.H.S., associate professor of neurology, infectious diseases, and epidemiology at the University of Colorado School of Medicine in Aurora, Colorado, to find out why you get bitten so damn much—and what you can do about it.

Why Do Mosquito Bites Itch?

The itching and swelling that accompanies a bite occurs when your immune system responds to something it doesn’t recognize.

“When a mosquito bites, the first thing it does is produce a little bit of its saliva, which contains proteins that your immune system sees as a foreign body, and mounts an immediate response to attack those proteins,” Day said. “That response tends to involve histamine that attacks those proteins, and that causes swelling, redness, and itching at the site.”

Find yourself running with the mosquitoes? Continue reading Danielle Zickl's article here.

Photo thumbnail Blog Author
Media Mentions from Runners World
Runners World
Runner’s World, the world’s leading running magazine, informs, advises, and motivates runners of all ages and abilities.
Media Mentions

Runner's World: Why Mosquitoes Love Runners So Much

Why Mosquitoes Love Runners So Much

There’s a scientific reason you get bitten more than sedentary folks do.

If you’re anything like us, mosquitos love you. You could be sitting by the pool with a few of your friends, and by the time you all go inside, you’re scratching away at your skin while everyone else managed to escape unscathed. So what’s the deal?

It’s not just in your head: There is a reason why you attract mosquitoes more than others—you’re a runner. But don’t panic. That doesn’t mean you’re doomed to a life of itchy, welt-covered skin every summer.

There are things you can do to limit the amount of bites you get, or make the ones you do get feel a little better. Here, we tapped Jonathan Day, Ph.D., a mosquito researcher and professor of medical entomology at the University of Florida and Daniel M. Pastula, M.D., M.H.S., associate professor of neurology, infectious diseases, and epidemiology at the University of Colorado School of Medicine in Aurora, Colorado, to find out why you get bitten so damn much—and what you can do about it.

Why Do Mosquito Bites Itch?

The itching and swelling that accompanies a bite occurs when your immune system responds to something it doesn’t recognize.

“When a mosquito bites, the first thing it does is produce a little bit of its saliva, which contains proteins that your immune system sees as a foreign body, and mounts an immediate response to attack those proteins,” Day said. “That response tends to involve histamine that attacks those proteins, and that causes swelling, redness, and itching at the site.”

Find yourself running with the mosquitoes? Continue reading Danielle Zickl's article here.

Photo thumbnail Blog Author
Media Mentions from Runners World
Runners World
Runner’s World, the world’s leading running magazine, informs, advises, and motivates runners of all ages and abilities.
Media Mentions
browse all articles
Here at Sawyer

Recent articles

Media Mentions
May 6, 2026
Antimusic: It's Time to Get Outside (And Take These Items With You)
Check out our list of things you might want to take with you on your outdoor adventure.
View post
Media Mentions
May 6, 2026
NY Mag: The Strategist: The 10 Very Best Tents for Camping and Backpacking
Whether you’re car-camping or hitting the John Muir Trail for two weeks with just a backpack for company, there’s an appropriate shelter for that.
View post
Media Mentions
May 5, 2026
Treeline Review: The Presidential Traverse Hiking, Backpacking, and Trail Running Guide
A quintessential northeastern hike with epic views and technical trails.
View post
Media Mentions
May 5, 2026
Backpacker: 8 Items Thru-Hikers Are Ditching Mid-Trek These
These 8 pieces of backpacking gear were deemed unnecessary by long-distance hikers.
View post
Media Mentions
May 5, 2026
Treeline Review: Bike Touring Packing List: Must-Have Gear for Multi-Day Trips
The essential lightweight gear you need for bike touring.
View post
Media Mentions
May 5, 2026
National Forest Foundation: Here is What You Need to Know to Stay Safe During Tick Season
Here is what you need to know to stay ahead of the curve during tick season.
View post
Media Mentions
May 5, 2026
Turkeys For Tomorrow: Tick Prevention Guide: How to Prevent Ticks
A primer in the ways that hunters and other outdoorsmen can reduce the odds of contact with ticks.
View post