Study: Eat Protein in the Morning

People who got 35 grams of protein at breakfast were less hungry throughout the day and saw favorable changes in the hormones and brain signals that control appetite.
More
3223201792_eab6086d7f_z570.jpg
SimonDoggett/Flickr

PROBLEM: Skipping breakfast is strongly correlated with weight gain. "Start your day off right," right? Still, young people eat nearly half of their daily calories between 4 p.m. and midnight. So, eat breakfast, but what's best?

METHODOLOGY: A small experiment out of the University of Missouri involved 20 overweight or obese females, aged 18 to 20, who identified as infrequent breakfast eaters. Each morning for a week, the researchers had the participants eat either 350 calories of cereal (13 grams of protein), 350 calories of eggs and beef (35 grams of protein), or skip breakfast entirely. Dietary fat, fiber, sugar, and energy density were kept constant across all of their breakfasts.

Participants adjusted to their diets for six days. On the seventh day, they were kept in a lab so that researchers could track/control their behavior. They had them fill out questionnaires about their hunger levels and cravings. They took repeated blood samples. They hooked them up to an fMRI while showing them pictures of food. These tests were repeated on three different Saturdays.

On lab days, the participants were all given a standard 500-calorie lunch; for dinner they were given cut-up pieces of microwaveable pizza pockets and told to eat until they were full. They were then sent home with coolers packed with 4,000 calories worth of snacks: cookies, cakes, granola bars, candy (in its hard, chocolate, and gummy forms), chips, popcorn, crackers, pretzels, microwaveable mac and cheese, string cheese, fruits and veggies, single servings of ice cream, beef jerky, yogurt, and more microwaveable pizza pockets. This was meant to simulate the overexposure to and wide availability of snacks typical of the "modern food environment."

RESULTS: Eating any breakfast was associated with increased feelings of fullness, a reduced desire to eat, and lower levels of ghrelin (a hunger-stimulating hormone) throughout the morning. But meaty, eggy breakfast was associated with these benefits over the course of the entire day. Participants who had a lot of protein in the morning also had reductions in their "cravings-related" brain activity, and increased levels of a hormone associated with satiety. They snacked less on fatty foods in the evening, as compared to those who ate cereal or nothing. 

Despite these positive chances, however, those who ate high-protein breakfasts ended up consuming about 120 extra calories overall. This was a nonsignificant difference, statistically, but one that wouldn't lead to them losing weight. The researchers believe that more benefits would be seen over time, as the participants adjusted to the early morning calories and because of their improved diet quality.

IMPLICATIONS: This makes a pretty good case for a high-protein breakfast. The authors propose ground pork loin as an alternative to sausage and eggs. If that doesn't do it for you, they also recommend plain Greek yogurt. To get 35 grams of protein you'd need to eat over two and a half servings of, say, Fage. For some, that's not a problem.


"Beneficial effects of a higher-protein breakfast on the appetitive, hormonal, and neural signals controlling energy intake regulation in overweight/obese, 'breakfast-skipping,' late-adolescent girls" is published in the American Journal of Clinical Nutrition.

Jump to comments
Presented by

Lindsay Abrams is an assistant editor at Salon and a former writer and producer for The Atlantic's Health Channel.

Get Today's Top Stories in Your Inbox (preview)

CrossFit Versus Yoga: Choose a Side

How a workout becomes a social identity


Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register. blog comments powered by Disqus

Video

CrossFit Versus Yoga: Choose a Side

How a workout becomes a social identity

Video

Is Technology Making Us Better Storytellers?

The minds behind House of Cards and The Moth weigh in.

Video

A Short Film That Skewers Hollywood

A studio executive concocts an animated blockbuster. Who cares about the story?

Video

In Online Dating, Everyone's a Little Bit Racist

The co-founder of OKCupid shares findings from his analysis of millions of users' data.

Video

What Is a Sandwich?

We're overthinking sandwiches, so you don't have to.

Video

Let's Talk About Not Smoking

Why does smoking maintain its allure? James Hamblin seeks the wisdom of a cool person.

Writers

Up
Down

More in Health

Just In