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Advocates of the Bulletproof Coffee trend suggest that adding butter to your morning cuppa joe can help you kick your day into overdrive.

Bulletproof Coffee is basically a cup of black coffee with grass-fed butter and medium-chain triglycerides (MCT) oil mixed in, designed by Dave Asprey, owner of Bulletproof Executive, to "supercharge your brain function and create effortless fat loss with no cravings."

Now, Paleo dieters and grass-fed butter fans are adding the butter-and-oil combo to their coffee. "Bulletproof Coffee is a great way to get healthy fats first thing in the morning," says Kerry Bajaj, a Be Well Health Coach at Eleven Eleven Wellness Center in New York City. "Starting the day with healthy fats provides energy, is good for cognitive function, and supports your hormonal system."

Butter from gass-fed cows provides a ratio of omega-3 to omega-6 fatty acids that's much healthier than what you get from conventionally raised livestock.

"There is some evidence that regular consumption of MCTs can induce very mild fat loss over time," says Christopher Ochner, Ph.D., research associate at The New York Obesity Nutrition Research Center at St. Luke's-Roosevelt Hospitals. "MCTs may also help regulate cholesterol levels, but the types of coconut oils and things from which people typically try to get MCTs often contain dangerous amounts of trans and saturated fats," says Ochner, who notes that 1 tablespoon of grass-fed butter and 1 tablespoon of MCT oil adds up to more than 100 percent of your recommended daily allowance of saturated fat.

"It's an extra 200-300 calories, so it has to replace some food or another caloric beverage," he says. "Otherwise, you would gain an extra 20 to 30 pounds each year by having a cup per day."

But if buttered coffee isn't something you're keen on adding to your diet, you can still reap plenty of benefits from MCT oil, says Bajaj. You can have a cup of black coffee alongside scrambled eggs cooked in MCT or coconut oil, which is naturally rich in MCTs. You can even add the oil to your favorite smoothies. Ochner advices to remember sticking to all-natural )trans fat-free) varieties.

If you're interested in making Bulletproof Coffee, follow the recipe below:

1. Boil 1 cup filtered water.
2. Use the water to brew strong black coffee from 2 1/2 heaping Tbsp of freshly ground coffee beans.
3. Add 1 tsp MCT oil (you can work up to 1 to 2 Tbsp over several days).
4. Add 1 Tbsp grass-fed unsalted butter or ghee (you can work up to 2 or more Tbsp over several days).
5. Mix in a blender for at least 20 seconds, until it's creamy and no oil sits on the surface.