Low-Carb Diet Trumps Low Fat in Weight-Loss Study

ABC News medical contributor Dr. Jennifer Ashton discusses how a diet high in protein and fats could be the key to weight loss.
1:52 | 09/02/14

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Transcript for Low-Carb Diet Trumps Low Fat in Weight-Loss Study
Now to a new study that takes on one of the biggest diet debates, is it more important to cut carbs or fat if you want to lose weight and stay healthy. Jen Ashton here with what the researchers found. Back away from the bagel. That is the one -- sorry. This is actually an interesting study. They compared a group of people followed them for a year. Those on a low-carb diet got 30% of their calories from carbs over the day. Low fat got about 30% of their calories from fat. At the end of the year Indianapolis 500 not just about what we saw on the outside the low carb lost more, they lost eight pounds more but on the inside their risk factors for heart disease all improved significantly compared to the low fat. Not even close. You're not surprised by this at all. I am not surprised at awe, you guys. I have been promoting this for years. It was in my second book which I talked about with you here. And the fact of the matter is you can actually eat more than you think. You have a lot more energy, you don't get the activation of those brain centers where we see surges after eating carbs and it's a very healthy way to eat. In moderation. So, Jen, give us a picture. A typical day, what does the look like. Bacon and eggs actually for breakfast. Not seven days a week but the majority of the day. For lunch a salad with grilled chicken not loaded with dressing then for dinner, fish, vegetables, plenty of fruit, lots of coffee. Oh, lots of coffee. Carbs fill you. Satisfy you. Temporarily but we burn right through them and what doesn't get used for fuel gets stored as fat. Is onettier than the other? I think low carbs metabol metabolically -- Cupcake -- Bake away from the bagel, pancakes and walk away from the waffles. Well done, Jen. It's been nice. We don't like hearing it but

This transcript has been automatically generated and may not be 100% accurate.

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