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Wendy's Vanilla Frosty
Wendy’s Frosty by bark (CC BY)

We all know fast food isn’t great for you. It’s bad, like really bad, but ignoring that fact is too easy. It gets even spookier once you decide to really look under the hood. Supplement brand Ben’s Natural Health put together a report detailing just how bad some of it is, in this case showing what it does to your blood sugar.

Analyzing glycemic index, carbs, calories, and glycemic load, Ben’s was able to put together an estimated spike in glucose, or in other words, your blood sugar. As the immortal R.L. Stine would say, reader beware. You’re in for a scare.

1. Cinnabon Cinnamon Roll

Cinnabon Cinnamon Roll
Kaneil S. / Yelp

Glycemic Index: 75

Carbs: 127

Calories: 340

Glycemic Load: 95.25

Estimated Spike: 238.125

Can’t say this comes as a surprise. Cinnabon is just about the most decadent chain restaurant on the planet, and there’s a reason those things taste like heaven on Earth. I love a Cinnabon dearly, but I’d be lying if I said I was brave enough to eat more than one every several years.

2. McDonald’s French Fries (Medium)

2. McDonald’s French Fries (Medium)
junce / iStock

Glycemic Index: 75

Carbs: 63

Calories: 440

Glycemic Load: 47.25

Estimated Spike: 118.125

Many people say these are the best fast-food fries you can eat. Those people aren’t me, for the record. There’s something to that though, and it’s probably because while you’re eating them, they’re also spiking your glucose up, up, and out of here.

3. Chick-fil-A Waffle Fries (Medium)

3. Chick-fil-A Waffle Fries (Medium)
©TripAdvisor

Glycemic Index: 75

Carbs: 60

Calories: 550

Glycemic Load: 45

Estimated Spike: 112.5

If you ask me, you’re better off leaving waffle fries behind. Yeah, I said it. They’re never crispy and they don’t dunk too well. Oh yeah, and the glucose thing.

4. Taco Bell Nacho Fries (Medium)

Taco Bell Nacho Fries
u/space-glitter via Reddit.com

Glycemic Index: 75

Carbs: 58

Calories: 660

Glycemic Load: 43.5

Estimated Spike: 108.75

You’re here for a lot of things at Taco Bell, but there’s no way that french fries are one of them. This shouldn’t be hard to quit.

5. Arby’s Curly Fries (Medium)

Phuong H./Yelp

Glycemic Index: 75

Carbs: 54

Calories: 270

Glycemic Load: 40.5

Estimated Spike: 101.25

Arby’s curly boys are some of the best fast-food fries in the game, but they’re seasoned. That makes ‘em delicious, but it also makes ‘em deadly.

6. Taco Bell Stuffed Tortilla Wrap

Taco Bell Crunchwrap
Michael T. / Yelp

Glycemic Index: 60

Carbs: 66

Calories: 520

Glycemic Load: 39.6

Estimated Spike: 99

This report must be dodging proper menu item names for legal reasons, but when it comes to a Mexican restaurant where the vast majority of the menu is just a bunch of things stuffed into and wrapped up in a tortilla, it’s hard to tell exactly what Ben’s Natural Health is going for. I’m guessing this is a Crunchwrap Supreme.

7. Dairy Queen Blended Ice Cream with Cookies (Small)

Diary Queen Blizzard
Sara S. / Yelp

Glycemic Index: 62

Carbs: 58

Calories: 670

Glycemic Load: 35.96

Estimated Spike: 89.9

Here’s another poorly codenamed menu item, this one an obvious reference to Dairy Queen’s Blizzard. Why aren’t they saying the names? Should I not be saying the names? Is Dairy Queen gonna come for me now?

8. Wendy’s Chocolate Frozen Dessert (Small)

Casey D. / Yelp

Glycemic Index: 60

Carbs: 51

Calories: 700

Glycemic Load: 30.6

Estimated Spike: 76.5

Third awkward alias in a row. Hat trick! This is a Frosty, clearly. Though I’m not glad it’s on the list, I’m glad they’re this low, because I love them dearly.

9. McDonald’s Double Cheeseburger

McDonald’s Double Cheeseburger
u/Patient_Cockroach_54 via Reddit.com

Glycemic Index: 66

Carbs: 45

Calories: 350

Glycemic Load: 29.7

Estimated Spike: 74.25

It’s pretty wild to think that burgers aren’t even in the top seven least healthy things you can order at a burger restaurant. Maybe you should just get two burgers instead of a burger and fries next time.

10. Popeyes Spicy Chicken Sandwich

Popeyes Spicy Chicken Sandwich
Rachel L. / Yelp

Glycemic Index: 66

Carbs: 45

Calories: 420

Glycemic Load: 29.7

Estimated Spike: 74.25

I’m sad to see my dear, precious Popeyes end up on this list, but that’s how it goes in the fast-food world. Pop’s spicy chicken sandwich has basically the same stats as a double cheeseburger from McDonald’s, save for the higher calorie count.

Meet the Writer

Wilder Shaw is a staff writer at Cheapism who has written for publications like The Washington Post