Researchers from Oregon Health & Science University found that individuals with a healthy weight tend to burn more energy during the day when they are active and eat, while obese individuals burn more energy at night. This can make weight loss more challenging for obese individuals.
It is important to note that obese people have elevated daytime insulin levels, indicating increased efforts by their bodies to utilize glucose, a high-energy sugar.
According to Andrew McHill, an assistant professor at Oregon Health & Science University (OHSU), the timing of energy expenditure differs significantly in individuals with obesity compared to those with a healthy weight. The reason behind this difference is still unknown. It is unclear whether burning less energy during the day contributes to obesity or if it is a consequence of being obese. Further research is needed to understand the relationship between energy expenditure patterns and weight.
Obesity, defined as having a BMI of 30 or higher, is associated with an increased risk of health conditions such as hypertension and Type 2 diabetes. In addition to weight, daily schedules and rhythms, including sleep, eating, and exercise patterns, play a crucial role in overall health. The body’s internal clock regulates these daily changes to optimize bodily functions throughout the day. Understanding the relationship between daily rhythms and obesity can provide valuable insights into managing weight and promoting better health.
Previous research has shown that circadian rhythm misalignment affects energy metabolism and glucose regulation, but these studies primarily focused on individuals with a healthy weight. To account for obese individuals, the researchers conducted a study that included people of various body sizes, aiming to understand the specific impacts of circadian rhythms on obesity.
In a six-day circadian study, 30 volunteers adhered to a strict sleep-wake protocol in a specialized lab. Tests included exercising with a mask linked to an indirect calorimeter, measuring exhaled carbon dioxide, and estimating energy expenditure. Blood samples gauged glucose levels post a consistent daily meal.