Calories by the clock? Squeezing most of your calories in early doesn't
impact weight loss

Date:
November 9, 2020
Source:
American Heart Association
Summary:
Time-restricted eating, which restricts eating to specific hours
of the day, did not impact weight among overweight adults with
prediabetes or diabetes. Adults in the 12-week study ate the same
healthy, pre-prepared foods, however, one group ate the bulk of
their calories before 1 p.m.

each day, versus the other group that ate 50% of their calories
after 5 p.m.



FULL STORY ========================================================================== Restricting meals to early in the day did not affect weight among
overweight adults with prediabetes or diabetes, according to preliminary research to be presented at the American Heart Association's Scientific Sessions 2020. The meeting will be held virtually, Friday, November 13 -- Tuesday, November 17, 2020.


==========================================================================
"We have wondered for a long time if when one eats during the day
affects the way the body uses and stores energy," said study author Nisa
M. Maruthur, M.D., M.H.S., associate professor of medicine, epidemiology
and nursing at Johns Hopkins University in Baltimore. "Most prior studies
have not controlled the number of calories, so it wasn't clear if people
who ate earlier just ate fewer calories. In this study, the only thing
we changed was the time of day of eating." Maruthur and colleagues
followed 41 overweight adults in a 12-week study. Most participants
(90%) were Black women with prediabetes or diabetes, and average age of
59 years. Twenty-one of the adults followed a time-restricted eating
pattern, limiting eating to specific hours of the day and ate 80% of
their calories before 1 p.m. The remaining 20 participants ate at usual
times during a 12-hour window, consuming half of their daily calories
after 5 p.m. for the entire 12 weeks. All participants consumed the same pre-prepared, healthy meals provided for the study. Weight and blood
pressure were measured at the beginning of the study; then at 4 weeks,
8 weeks and 12 weeks.

The analysis found that people in both groups lost weight and had
decreased blood pressure regardless of when they ate.

"We thought that the time-restricted group would lose more weight,"
Maruthur said. "Yet that didn't happen. We did not see any difference
in weight loss for those who ate most of their calories earlier versus
later in the day. We did not see any effects on blood pressure either."
The researchers are now collecting more detailed information on
blood pressure recorded over 24 hours, and they will be compiling this information with the results of a study on the effects of time-restricted feeding on blood sugar, insulin and other hormones.

"Together, these findings will help us to more fully understand the
effects of time-restricted eating on cardiometabolic health," Maruthur
said.

Co-authors are Scott Pilla, M.D., M.H.S.; May T.T. Maw, M.B.B.S.M.,
M.P.H.; Daisy Duan, M.D.; Di Zhao, Ph.D.; Eliseo Guallar, M.D., Dr. P.H.;
Ruth Alma Turkson Ocran, Ph.D.; Karen White, M.S.; Beiwen Wu, M.S.P.H.;
Jeanne Charleston, R.N.; Lawrence J. Appel, M.D., M.P.H.; and Jeanne
M. Clark, M.D., M.P.H.


========================================================================== Story Source: Materials provided by American_Heart_Association. Note:
Content may be edited for style and length.


==========================================================================


Link to news story: https://www.sciencedaily.com/releases/2020/11/201109074119.htm

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