Eating breakfast increases brain chemical involved in regulating food intake and cravings

According to the Centers for Disease Control and Prevention (CDC), many teens skip breakfast, which increases their likelihood of overeating and eventual weight gain. Statistics show that the number of adolescents struggling with obesity, which elevates the risk for chronic health problems, has quadrupled in the past three decades. Now, MU researchers have found that eating breakfast, particularly meals rich in protein, increases young adults' levels of a brain chemical associated with feelings of reward, which may reduce food cravings and overeating later in the day. Understanding the brain chemical and its role in food cravings could lead to improvements in obesity prevention and treatment.

"Our research showed that people experience a dramatic decline in cravings for sweet foods when they eat breakfast," said Heather Leidy, an assistant professor of nutrition and exercise physiology. "However, breakfasts that are high in protein also reduced cravings for savory – or high-fat – foods. On the other hand, if breakfast is skipped, these cravings continue to rise throughout the day."

Leidy studied the effects of different breakfasts on participants' levels of dopamine, a involved in moderating impulses and reward, including . Dopamine levels were determined by measuring homovanillic acid (HVA), the main dopamine metabolite. Eating initiates a release of dopamine, which stimulates feelings of food reward. The reward response is an important part of eating because it helps to regulate food intake, Leidy said.

"Dopamine levels are blunted in individuals who are overweight or obese, which means that it takes much more stimulation – or food – to elicit feelings of reward; we saw similar responses within breakfast-skippers," Leidy said. "To counteract the tendencies to overeat and to prevent that occurs as a result of overeating, we tried to identify dietary behaviors that provide these feelings of reward while reducing cravings for high-fat foods. Eating breakfast, particularly a breakfast high in protein, seems to do that."

Participants in the study were young women with an average age of 19; however, Leidy said the findings may be generalized to a larger population of adults.

"In the U.S., people are skipping breakfast more frequently, which is associated with food cravings, overeating and obesity," Leidy said. "It used to be that nearly 100 percent of American adults, kids and teens were eating , but over the last 50 years, we have seen a decrease in eating frequency and an increase in obesity."


Explore further

Protein-rich breakfasts prevent unhealthy snacking in the evening

Citation: Eating breakfast increases brain chemical involved in regulating food intake and cravings (2014, October 15) retrieved 18 October 2019 from https://medicalxpress.com/news/2014-10-breakfast-brain-chemical-involved-food.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more