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Why Evenings May Be a Dangerous Time for Dieters

By Robert Preidt

FRIDAY, Jan. 19, 2018 (HealthDay News) -- The hours after sunset may be toughest for folks trying to stay slim, new research shows.

The small study suggests that you're more likely to overeat in the evening -- especially if you're feeling stressed.

"The good news is that having this knowledge, people could take steps to reduce their risk of overeating by eating earlier in the day, or finding alternative ways to deal with stress," said study lead researcher Susan Carnell. She's an assistant professor of psychiatry and behavioral sciences at the Johns Hopkins School of Medicine in Baltimore.

The science behind the study focuses on ghrelin, a "hunger hormone," and peptide YY, a hormone tied to feelings of fullness.

The study tracked 32 overweight or obese people, aged 18 to 50. Half of the participants had long struggles with overeating, having been diagnosed with binge-eating disorder.

In the study, all of the participants fasted for eight hours, then got a liquid 608-calorie meal at either 9 a.m. or 4 p.m. About two hours after that meal, the participants were "stressed" by placing a hand in a bucket of cold water for two minutes.

Then 30 minutes later, everyone was offered a buffet laden with pizza, snack chips, cookies and chocolate-covered candies.

Blood tests tracked levels of both the hunger hormone and the fullness hormone throughout the experiment.

According to Carnell's team, hunger hormone levels rose and fullness hormone levels fell more in the evening compared to the morning.

The stress test seemed to push ghrelin levels even higher -- but only in the evening, the study found.

The bottom line is that "evening is a high-risk time for overeating, especially if you're stressed and already prone to binge-eating," Carnell said in a university news release.

Also, the impact that hormones had on appetite was found to be greater among binge-eaters, the study found.

The study was published recently in the International Journal of Obesity.

More information

The U.S. National Institute of Diabetes and Digestive and Kidney Diseases has more on binge-eating disorder.

SOURCE: Johns Hopkins Medicine, news release

Copyright © 2018 HealthDay. All rights reserved. URL:http://consumer.healthday.com/Article.asp?AID=730237

Resources from HONselect: HONselect is the HON's medical search engine. It retrieves scientific articles, images, conferences and web sites on the selected subject.
Hormones
Hunger
Hyperphagia
Emotions
The list of medical terms above are retrieved automatically from the article.

Disclaimer: The text presented on this page is not a substitute for professional medical advice. It is for your information only and may not represent your true individual medical situation. Do not hesitate to consult your healthcare provider if you have any questions or concerns. Do not use this information to diagnose or treat a health problem or disease without consulting a qualified healthcare professional.
Be advised that HealthDay articles are derived from various sources and may not reflect your own country regulations. The Health On the Net Foundation does not endorse opinions, products, or services that may appear in HealthDay articles.


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