UAB Study Shows Limiting Meal Times Can Lower Appetite
Researchers have known for a while that eating earlier in the day when metabolism rates are higher can help with weight loss. So can consuming all meals within a narrow window of time and then fasting for several hours.
“But there was a big question, like why does it help with weight loss?” Courtney Peterson, assistant professor in UAB’s Department of Nutrition Sciences, says. “Is it because it helps people burn more calories, or is it because it makes them less hungry, or both?”
To try to answer that question, Peterson and fellow researchers conducted a study to measure changes in appetite levels and the number of calories people burn when they use Early Time-Restricted Feeding (eTRF), a form of intermittent fasting.
Participants tried two different meal schedules. They spent four days eating from 8 a.m. to 8 p.m., the average schedule for an American adult, and they spent another four days eating the same meals between 8 a.m. and 2 p.m, a version of eTRF.
On the fourth day of each meal schedule, participants remained in a controlled environment for 24 hours so researchers could measure data including levels of the hunger hormone Ghrelin.

Peterson says the results were a bit surprising. They found that the eTRF schedule did not help participants burn more calories, but it did help them burn more fat and it lowered their appetite levels.
“That’s still a major victory,” Peterson says, “because if you can make people naturally less hungry, then that’s going to help them not only with weight loss, but with maintaining their weight.”
Researchers enrolled 11 overweight men and women, a small but appropriate sample size, according to Peterson. The study was published online Wednesday in the journal Obesity.
Peterson says the next step is to test whether people are able to consistently follow the restricted meal schedule and whether it can actually help people lose weight.
Photo by Pixabay
Editor’s Note: WBHM is a member-supported service of UAB, but our newsroom and business operations are separate.
Voice of America gutted by Trump adviser Kari Lake
The Trump administration is slashing jobs at Voice of America's parent agency by 85%. Journalists who have risked their freedom to report for the broadcaster wonder what happens next.
Judge orders release of Columbia activist Mahmoud Khalil
Khalil will be released on bail while his case challenging his deportation orders plays out in the courts.
A cancer center in Jordan treats kids from Gaza, but only a few dozen have arrived
Children from Gaza with cancer are finally making it to Jordan for long-promised treatment. But a plan to allow as many as 2,000 patients out of the war-torn enclave has slowed.
What children in poverty could lose from the ‘Big Beautiful Bill’
Republicans want to change or reduce key social safety net programs that provide healthcare, food benefits and financial assistance for millions of children.
Bessemer recommends changing its laws to accommodate one of the country’s largest proposed data centers
Despite overwhelming public opposition, officials in Bessemer voted to recommend changes to city zoning ordinances to allow the massive development. Its operation could strain the state’s water and power supplies and leave an already imperiled fish species at risk of extinction.
Why is caregiving so hard in America? The answers emerge in a new film
A new documentary on PBS shows what it's like to care for adult family members and recounts the history of caregiving policy in the U.S., revealing why those caring for family are often on their own.