Dietitians advise caution about 'bulletproof' coffee trend

Dietitians are offering a word of warning when it comes to 'bulletproof' coffee.

The current diet trend is a blend of butter and coconut oil in your cup of joe.

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Supporters say this high-fat coffee is an energy boost.

But dietitians warn you're taking that coffee from 0 calories to almost 500.

Instead, they recommend balancing your java with fresh fruits or oatmeal for a similar energy kick.

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