This is the only bread you should eat, according to a cardiac surgeon

We're about to tell you something you already know, but probably don't want to hear: Bread just isn't that great for you. (Sorry. It's true.) In fact, according to cardiac surgeon Steven Gundry in his new book The Plant Paradox, there's only one type of bread that's healthy to eat...and surprisingly, it contains no grain whatsoever.

What is this magical, doctor-approved bread? It's called Barely Bread, and it's a soy-, yeast- and gluten-free, paleo-friendly bread substitute that actually tastes a heck of a lot like real bread.

So what exactly is it made of? Egg whites, almond flour, coconut oil, coconut flour, sweet potato flour, hazelnut flour, almond butter and some other good stuff. There are 90 calories, 5 grams of fiber and 3 grams of protein per slice. (Compared to 128 calories, 3 grams of fiber and 3 grams of protein in a slice of whole-wheat bread.)

If you're not ready to jump on the Barely Bread chain, here are a few other ways to choose the healthiest bread:

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How to Choose the Healthiest Bread
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How to Choose the Healthiest Bread

Know Your Labels

Look for bread labels that say "100% whole grain" or "100% whole wheat." Then, take a peek at the ingredients. The first ingredient should say "whole-wheat flour" or "100% whole-wheat flour." Anything less means you are not purchasing the most genuine and nutritious product.

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The Power of Whole Grains

Gravitate toward whole grains. They are naturally low in fat and cholesterol free. Not only that, whole grain breads are richer and jam-packed with healthy fiber, protein, vitamins and minerals.

Whole grains reportedly help to prevent heart disease, stroke, diabetes, obesity and some cancers. So, don't skimp on the quality good stuff!

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Understanding Whole Grains vs. Whole Wheat

In order to know what you're looking for and why, it's important to understand what each of these mean. Whole grains have unrefined flour, thus, leaving the nutrients intact. Breads marked as "100% whole wheat" are made of whole wheat flour, but not necessarily whole grain flour.

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Watch Your Sodium Intake

Large amounts of sodium are added to many products. Why? Well, if we're being quite candid, it tastes fantastic. When it comes to bread, it also helps regulate yeast activity. However, at around 200 milligrams per serving of bread, you could reach your daily suggested intake of 1,800 milligrams in no time!

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Serving Size and Weight Matter!

Sorry, folks. Not all bread is created equal. Make sure to check the weight of the serving listed, and carefully check the serving size. Many breads claim to be "diet" or "light," but will shrink the size of their portion, or list the serving size as two slices, with the information listed only pertaining to one slice. Catch our drift? Tricky, tricky.

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Tricky Labels

These may look fabulous, but healthy? Not necessarily so. Be careful you are not tricked by these labels:

Wheat flour
Unbleached wheat flour
Enriched white flour
Enriched wheat flour
Stone-ground wheat flour
Multi-grain
5- or 7-grain
100% wheat flour
Bran

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Unhealthy Fats

Try to remain cautious and steer clear of unwanted, unhealthy fats such as:

Hydrogenated vegetable oil
Trans fats
Partially hydrogenated oils
Vegetable oil shortening

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The Unwanted Extras

Take an extra-close look at the ingredients and keep your eyes peeled for dyes, high sugar content and high fructose.

Image Credit: Corbis

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What does it taste like? OK, as you probably expected, the consistency isn't exactly like real bread. But it's not cakey or dry like other GF breads we've tried, and the egg whites make it almost airy, sort of like cloud bread. For best results, zap the slices in the toaster oven on both sides until it's slightly crunchy. Mash some avocado on top and you'll barely taste the difference. Seriously.

And why is it healthier than real bread? Dr. Gundry says it's not only about the carbs and the gluten, but also the high level of lectins—aka carbohydrate-binding proteins that can be toxic in large amounts—that make traditional bread unhealthy. Barely Bread is 100 percent lectin-free, so your bases are covered.

Where can I buy it? Slices, baguettes, bagels and rolls are available online, at Whole Foods, or at your local health food store. Give it a try.

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