Millions of people bought NutriBullet blenders because of the promise that these "nutrient extractors" could make them healthier.

Now, a new lawsuit claims they could actually put your life in danger.

The hugely popular appliance lets customers blend smoothies and drink them from the same container. The NutriBullet has become a hit because it's easy to clean, simple to use, and saves time because of its creative design.

But in the past, the company has been the subject of serious warnings about product safety. Product testing magazine Consumer Reports identified the NutriBullet Pro 900 as a "safety hazard" after blades on two different machines broke during their durability tests.

Because of the NutriBullet's design, which lets you drink straight from the blending pitcher, the magazine considered this a serious defect. "If you already own the product," they wrote, "we suggest you stop using it."

Now a new class-action lawsuit details an even more dangerous malfunction, and experts are sharing how you can protect yourself from an exploding NutriBullet blender.

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