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The #1 Worst Food to Never Order at McDonald's

Wait, it has HOW many calories?

It's no secret that "McDonald's" and "healthy" aren't exactly synonymous. But if you find yourself at the fast-food chain, it's important to know that not all menu items are created equal. Although you won't find a healthy, nutritious meal or snack at McDonald's, registered dietitians and nutritionists agree that there's one food to avoid at all costs: the McFlurry. And between the McFlurry options, the M&M flavor is the worst offender.

According to the nutrition information from the McDonald's website, a regular-sized M&M McFlurry clocks in at 640 calories. It also contains 21 grams of fat, which is 31% of the recommended daily value. And the amount of saturated and trans fat in the McFlurry takes up a whopping 67% of the recommended daily value.

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The M&M McFlurry is high in sugar

The M&M McFlurry also contains a staggering amount of sugar. Bansari Acharya, MA, RDN, of, explains that combining M&M's with a soft-serve vanilla base from McDonald's creates a serving of a sweet treat that contains more than 80 grams of sugar. "That
almost doubles the daily recommended amount of added sugars recommended by the FDA by just one dessert, as they recommend no more than 50 grams of added sugars a day," says Acharya.

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The McFlurry is full of empty calories

mms mcflurry from mcdonalds

It's not just the calorie count that makes the M&M McFlurry an order to avoid. As Acharya points out, it doesn't even give you the satiety of a full meal.

On a similar note, Megan Wong, an RD working with AlgaeCal, says that by consuming an M&M McFlurry, "the average woman is using up around 30% of her day's [recommended] calorie intake." For context, Wong notes that the McFlurry contains more calories than you'd find in a Quarter Pounder with both cheese and bacon.

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In addition to the McFlurry's calorie count and high amounts of sugar, fat, and saturated fat, Vanessa Rissetto, RD, CDN, nutritionist and co-founder of Culina Health, cited the ingredient carrageenan as yet another reason to avoid the shake at all costs. "Carrageenan is used for thickening and stabilizing but also has some negative effects on the body," says Rissetto, who also named the McFlurry as the worst food to order at McDonald's. "Food-grade carrageenan is extracted from red seaweed and processed with alkaline substances." She explains that sometimes with processing, carrageenan can release an inflammatory substance that can carry significant health warnings.

"[The McFlurry] basically has nothing redeemable," says Rissetto. Case closed.

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Caitlin Flynn
Caitlin Flynn is an award-winning writer and reporter who experienced early age corporate burnout in 2015 and traded New York City for the misty air and superior coffee of Seattle. Read more about Caitlin