Dec. 21, the Winter Solstice, marks the shortest day of the year with only a little more than nine hours of daylight here in Pittsburgh. With less light some people might be feeling ready for bed a little early. According to researchers, this is another way our bodies fight off some diseases.
With shorter days and longer nights our bodies’ melatonin levels are rising earlier than usual. Melatonin is the molecule that tells our bodies when it is night and prepares us for sleep. Melatonin has also been found to be important in maintaining healthy bones.