Is Bulletproof Coffee Actually Good For You?

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Bulletproof coffee is a breakfast replacement coffee drink. You read that right: thanks to all of its added calories, it'll replace your whole breakfast, not just your cup of Joe. Those extra calories come from the butter and MCT oil that's mixed into the beverage, and the name stems from David Asprey, creator of the "Bulletproof Diet."

Asprey's specific recipe calls for two cups of coffee, two tablespoons of grass-fed, unsalted butter (or ghee), and between one and two tablespoons of MCT oil. Mix them all in a blender and you've got yourself a bulletproof coffee. Now, people use the term bulletproof coffee for any coffee-butter-oil drink that uses roughly the same ratio of each ingredient. It's popular with people on keto, paleo, and other low-carb diets.

Despite the recent spike in its popularity, bulletproof coffee isn't really a novel idea. For example, Indian and Himalayan cultures have been mixing butter into their coffee for hundreds of years. Ayurveda, a 3,000-year-old Indian natural system of medicine, also has a drink called po cha, which is fermented black tea and salted yak butter.

Centuries ago, the idea was that adding all this butter and MCT oil to coffee had certain health benefits, from promoting weight loss to boosting mental clarity. Today, those promoting Bulletproof coffee are making those same claims. But is bulletproof coffee actually any good for you?