“Winter depression is much more complicated than the simplistic model that is being proposed by the investigators ... who, by the way, did this study out of Alabama,” Dr. David Avery said.

Avery, whose research includes winter depression and light therapy, spoke with KIRO 7 about why he thinks the study is flawed, especially for how it applies to people living in the Seattle area.

In February, KIRO 7 News talked to Avery about a type of light therapy called "Dawn Simulation" can improve mood, and reset and improve sleep/wake cycles, according to clinical studies. Click here to watch that report.