Then take the protein calories and divide by the total calories in the food. That gives you the share of calories in the food that comes from protein. For instance, let's say a protein bar has 20 ...

If you're overwhelmed by the countless protein bars out there, we asked dietitians to help narrow down which are the best.

There's even a high-protein version of a Snickers bar. Leaning into protein claims on packaging Of course, these claims don't always mean the food is good for you or even a good source of protein.

Protein has taken over the packaged-snack aisles at the grocery store. But do you need extra protein in your chips and muffins?

That gives you the share of calories in the food that comes from protein. For instance, let's say a protein bar has 20 grams of protein and 200 calories. You'd multiply 20 × 4 to get 80.

Now you know the calories from protein in the food. Then take the protein calories and divide by the total calories in the food. That gives you the share of calories in the food that comes from ...