Winter depression may heed hormonal signal

It’s the most wonderful time of the year, according to a popular holiday song. Yet it’s the most excruciating time for people who endure the biological tidings of discomfort and gloom that are linked to winter’s arrival, according to a new study.

A specific shift of the body’s daily pacemaker, akin to one that regulates seasonal behavior in many mammals, underlies recurring winter depression, contend psychiatrist Thomas A.