3 Reasons Why All Calories Are Not the Same

Robert Lustig, MD, explains why all calories are not created equal.

View as Slideshow

Cutting-edge experts say the “calories in, calories out” philosophy is oversimplified and inadequate.

 Cutting-edge experts say the “calories in, calories out” philosophy is oversimplified and inadequate.
Quality of calories determines the quantity your body burns or stores, says Robert Lustig, MD, author of the recently published book Fat Chance: Beating the Odds Against Sugar, Processed Foods, Obesity, and Disease. He shares these fascinating examples of how calorie quality affects your weight and health.


Fiber delays the absorption of calories. For example, when you eat a 160-calorie portion of almonds, you absorb only 130 because some calories are delivered to your intestine, where your gut bacteria burn them for their own energy source.


You use twice as much energy to metabolize protein as carbohydrate—due to the thermic effect of food. Protein also reduces hunger hormones more than carbs do.


Starches (like potatoes) contain mainly glucose, which every cell in your body uses for energy. Fructose—found in soda and candy and added to most processed foods—is metabolized in your liver as fat, which drives chronic diseases such as diabetes.

Want to stay smart and healthy?

Get our weekly Health Reads newsletter

how we use your e-mail

Some people like to travel by train because 
it combines the slowness of a car with the cramped public exposure of 
an airplane.

Dennis Miller

I think my pilot was a little inexperienced. We were sitting on the runway, and he said, “OK, folks, we’re gonna be taking off in a just few—whoa! Here we go.”

Kevin Nealon

“I can’t wait until your vacation is over.” 
—Everyone following you on Instagram


A man knocked on my door and asked for a donation toward the local swimming pool. So I gave him a glass of water.

Comedian Greg Davies

Funny Jokes

Just found the worst page in the entire dictionary. What I saw was disgraceful, disgusting, dishonest, and disingenuous.


Funny Jokes

Client: We need you to log in to the YouTube and make all our company videos viral.

From clientsfromhell.net

Funny Jokes

My cat just walked up to the paper shredder and said, “Teach me 
everything you know.”


Funny Jokes

“Just because you can’t dance doesn’t mean you shouldn’t dance.” 

@yoyoha (Josh Hara)

Funny Jokes

My parents didn’t want to move to Florida, but they turned 60 and that’s the law.

—Jerry Seinfeld

Funny Jokes

Q: What do you call an Amish guy with his hand in a horse’s mouth?

A: A mechanic.