In Maryland, a new study published in the scientific journal of The Obesity Society adds scientific data to the claim that morning people may be healthier than evening people. This is the first study to examine what and when people with different internal time clocks eat, including macronutrients like carbohydrates, protein and fat.
Researchers looked at data from nearly 2,000 randomly chosen people to determine if their biological clock affected what they ate and at what time. Clear differences in both energy and macronutrients between the two types showed morning people making healthier choices throughout the day.
Evening types ate less protein overall and ate more sugar in the morning. In the evening, they ate more sugar, fat and saturated fatty acids. On weekends, the differences between the morning and evening types were even more pronounced, with evening types having more irregular meal times and twice as many eating occasions.