The scientists have discovered that if you get a little early morning sunshine, you will improve your health by lowering the body fat. In the first study to link light to weight, the scientists believe that even 20 to 30 minutes of morning sunshine is enough.
The professor of Neurology at Northwestern University Feinberg School of Medicine, Dr. Phyllis Zee, said that the light is the most potent thing to synchronize the internal body clock that regulates the energy balance and the circadian rhythms.
If you don’t get enough light at the appropriate time of day, that could de-synchronize your internal body clock, slow down your metabolism and you can gain weight. According to Dr. Zee, many people don’t get enough natural light, because western lifestyles are mostly indoors.
The researchers advise that the morning light should be inserted into many weight management programs.
Kathryn Reid, the co-lead author and research associate professor of neurology at Northwestern, said that just like people are sleeping more to lose weight, maybe this manipulating of the light is another way to lose the weight.
In the study were involved 54 people with an average age of 30 years. They were wearing a wrist monitor that measured their sleep parameters and light exposure for 7 days in normal conditions. Their caloric intake was taken from 7 days of food logs.
They discovered that those people who were often exposed to more morning light, had lower BMIs. The effect counts for 20% of the Body Mass Index or BMI that is a measure of body fat based on weight and height.
The researchers concluded that people should be encouraged to get more exposure to light, as a part of a healthy lifestyle.
Schools and workplaces should have windows, and employees should go outside for breaks or lunch, and the indoor lighting should be improved.
Dr. Zee added that there is something that we can do early in our schools in order to prevent obesity on a larger scale.