But several nutritionists disagree with the finding.
Starting your morning
with a high-protein food and a "dessert" — such as a doughnut or a
slice of cake — may help you lose weight and keep it off, a new study suggests.
However, several
nutritionists said they weren't ready yet to embrace the study's conclusions.
When researchers from
Tel Aviv University's Wolfson Medical Center in Israel compared two diet regimens — one featuring a low-carbohydrate breakfast, the other a high-protein,
high-carb breakfast — the sweets-with-breakfast group lost more weight after
eight months.
"Although dietary
restriction often results in initial weight loss, the majority of obese dieters
fail to maintain their reduced weight," wrote the study's authors.
Diet-related weight
loss often triggers hunger and cravings while decreasing suppression of
ghrelin, a hormone that stimulates hunger, the researchers said. This may
encourage weight gain. But, "a high protein and carbohydrate breakfast may
overcome these compensatory changes and prevent obesity relapse," they
concluded.
The findings are
scheduled for presentation Monday at the Endocrine Society's annual meeting in
Houston.
But at least two U.S.
nutrition experts question the wisdom of encouraging regular consumption of
sweet, calorie-dense, low-nutrition foods.
"A combination of
protein and carbohydrates may have kept these study volunteers satisfied, but
you have to pay attention to the quality of foods you're eating, too,"
said clinical nutritionist Lauren Graf at Montefiore Medical Center, in New
York City. "You don't want to encourage people to eat a lot of foods with
trans fats, like doughnuts, cookies and cakes." Trans fats, which are
partially hydrogenated oils found in baked goods and other products, can raise
blood cholesterol levels.
Samantha Heller, a
registered dietitian and clinical nutrition coordinator at the Center for
Cancer Care at Griffin Hospital in Derby, Conn., also expressed concerns.
"When you look at
what people are eating for breakfast, it's things like chocolate-covered honey-dipped
cereals. Isn't this the same as dessert?" Heller said. "So many
people are eating dessert for breakfast already, which is helping to contribute
to weight gain, not loss."
Refined carbohydrates
and sugary treats cause a roller-coaster effect on blood sugar, insulin,
energy, appetite and fatigue, Heller added. "Over time, this increases the
risk of certain chronic diseases like type 2 diabetes," she said.
The study included 193
obese men and women who lived sedentary lifestyles, but didn't have
type 2 diabetes. The average body mass index was 32.2. A measurement of 30 is
considered obese, while below 25 is considered normal weight. The average age
was 47.
The study volunteers
were randomly assigned to one of two groups, each allowing men 1,600 calories
daily and women 1,400 calories a day. One group got a high-protein, high-carb
breakfast, while the other group was put on a low-carb diet that included a
304-calorie breakfast, with only 10 grams of carbohydrates and 30 grams of
protein. (A small apple contains 14 grams of carbohydrates).
The
dessert-with-breakfast group was allowed 600 calories at breakfast — almost
twice as many calories — including 60 grams of carbohydrates and 45 grams of
protein. Types of protein included tuna, egg whites, cheese and low-fat milk.
This group ate fewer calories at lunch and dinner than the low-carb group.
After four months,
volunteers in both groups lost about 33 pounds each. Over the next four months,
however, dieters eating low-carbohydrate breakfasts regained 22 pounds on
average. But, those who'd had dessert with breakfast continued to lose weight,
averaging another 15-pound weight loss, according to the study.
The researchers speculated
that dieters who had sweets with breakfast had lower levels of ghrelin, the
hunger hormone, so they weren't as hungry and were less likely to crave the
foods they'd eaten earlier in the day.
Heller suspects that
eating a healthy form of protein at each meal and snack likely helped these
dieters feel full and keep their blood sugar levels on an even keel.
Graf said the study
shows that a strict low-carbohydrate diet isn't necessarily the best long-term
approach to weight loss. "If you love sweets, maybe having them once or
twice a week is OK, though I don't recommend processed foods," she added.
Data and conclusions
presented at meetings should be considered preliminary until published in a
peer-reviewed medical journal.