FRIDAY, March 3, 2017 (HealthDay News) — Early birds may have a leg up over night owls when it comes to health and weight, new research suggests.
Investigators in Finland found that morning people tend to eat better and earlier in the day than late-to-bed types.
The result: a higher risk of obesity for the night owls, said study lead author Mirkka Maukonen, of the National Institute for Health and Welfare in Helsinki.
“We found that night owls had postponed timing of food intake, and less favorable eating patterns with higher intakes of sucrose, fat and saturated fat in the evening hours than early birds,” said Maukonen, a doctoral candidate in the department of public health solutions. Sucrose is a type of sugar.
Registered dietitian Lona Sandon, of the University of Texas Southwestern Medical Center at Dallas, wasn’t surprised by the findings. She said physiology and biology likely play a role.
“Past research has shown that hormones that impact appetite and metabolism — the way our body uses or stores energy — are produced at different levels throughout the day and night,” said Sandon, who wasn’t involved in the study.
“The amount of sleep and time period of sleep may affect the production of these hormones, and therefore drive differences in appetite or food choices as well as body composition and weight,” she explained.
So what’s a night owl to do?
“Changing sleep habits, just like changing dietary habits, is tough for many people,” said Sandon. “But it just may be worthwhile for people to try for one’s health.”
The researchers found that night owls also engaged in less routine physical activity, had more difficulty sleeping, and were more likely to smoke. And fewer night owls ranked themselves as being in good overall health or shape, relative to morning people.
The study team focused on nearly 1,900 Finnish adults ages 25 to 74 who had participated in a national nutritional study or a national heart disease study in 2007.
For the nutrition study, participants completed 48-hour food diaries that tallied daily caloric intake and consumption of carbohydrates, sugar, fiber, protein, fat and saturated fatty acids, and alcohol.