grown up obesity A new study found similar weight loss and improvement in several cardiometabolic markers after limiting diet to 4 or 6 hours a day for 2 months.
“These findings show that this form of serious [time-restricted feeding] According to Sophia Cienfuegos, a PhD student at the University of Illinois at Chicago, and his colleagues, this is achievable, helping obese adults lose weight and not having to count calories. Published online July 15 Cell metabolism..
“These results were 6 hours until there were further studies comparing the two meals directly or trying to study the optimal time on an empty stomach. [time-restricted feeding] It may make sense for most people who want to pursue a daily fasting diet,” said Dr. Christa A. Baladdy, lead author and professor of nutrition at the same university.
The researchers hypothesized that a more stringent regimen (4 hours) would lead to weight loss and lower blood pressure, as well as improved glycemic control and levels of oxidative stress markers.
However, participants both The timed feeding group consumed about 550 less calories per day than participants in the control group with similar weight loss and other results at 2 months.
The results are “promising and reinforce what we’ve seen in other studies. I want to lose weight on a fasting diet, especially for those who don’t want to count calories or find other diets tired It’s a viable option for people,” said the Varady statement.
“It also tells that there was no additional weight loss benefit for longer lasting people [20-hour] It’s faster than an 18-hour fast,” she said.
Warrior diet vs 18:6 diet vs control
As background, the authors have recently gained popularity with three types of intermittent fasting therapy that “cause clinically significant weight loss and provide protection against metabolic disorders.”
Alternate days fasting consists of eating (as much as you like) freely on the “feast” day, then fasting the next day, and repeating, they explain. The 5:2 diet includes 2 fasts per week and a regular 5 day diet.
The current study compared two types of intermittent fasting time-limited feeding. This involves eating only 4 hours (warrior meal) or 6 hours (18:6 meal) and fasting for the rest.
It’s not clear whether skipping breakfast is bad for weight control, and researchers say patients may be more accustomed to diet if they can eat during normal family dinners ..
Therefore, restricted feeding between 1 pm to 7 pm (6 hours) or 3 pm to 7 pm (4 hours) was compared to pm/evening.
They randomized 58 people aged 18-65 with obesity (body mass index) [BMI], 30 ~ 49.9 kg / m2) Your weight is stable, sedentary or moderately active, Type 2 diabetes..
On average, the participants were 47 years old and had a BMI of 37 kg / m.2, Weighs 100 kg (220 lbs). Most were women (90%), and about 66% were black.
Participants were randomized to a 4-hour timed feed (19 participants), a 6-hour timed feed (20), or a control (19) group.
After a 2-week weight stability period (a period in which participants were instructed to maintain the same diet, physical activity level, and weight), they participated in an 8-week intervention.
Participants in the time-limited feeding group were advised to eat any amount of any food and drink large amounts of water without counting calories during the feeding period. Tea, coffee and diet soda were also allowed on an empty stomach.
Participants in the control group received no dietary advice, but were instructed to maintain the same diet and physical activity habits to maintain the same weight.
Testing required for long-term feasibility of time-limited feeding
At 8 weeks, participants in the timed feeding group lost an average of 3.2% of their initial weight, while participants in the control group lost 0.1% of their initial weight.
Participants in the two time-restricted feeding regimens had a similar decrease on an empty stomach. Insulin, Insulin resistance, And the oxidative stress marker 8-isoprostane, even with these two regimens, blood pressure, LDL cholesterol, HDL cholesterol, or Triglyceride..
No serious adverse events have been reported.
Participants in the restricted feeding group had mild adverse events (vertigo, nausea, headache, diarrhea) that peaked at 2 weeks, disappeared by 3 weeks and did not recur.
Dropout rates for the 6-hour time-limited feeding group (1 in 20 participants; 5%) were 4 hours in the time-limited feeding group (3 of 19 participants; 16%) or the control group (19%). 5 of the names are 26%).
Researchers point out that no one dropped out because most people discontinued the study because of schedule inconsistencies and, importantly, disliked timed feeding interventions.
They acknowledged that this was a small study, which assessed restricted feeding later in the day, but insulin sensitivity was said to be higher in the morning. In addition, participants did not lose 5% of their initial clinically meaningful weight.
“These discoveries are promising, but future trials will be needed to examine their feasibility. [time-restricted feeding] It is also long-term and we will also investigate whether the weight loss and cardiometabolic benefits observed here can last longer,” the researchers conclude.
The research was supported by the National Institutes of Health. Baladi reports that he has received an author fee for the book “Everyday Diet” from the Hachette Book Group. Other authors have reported no financial relationships involved.
Cell metabolism Published July 15, 2020 Online. Overview
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