Many comments here are confusing issues: - It's not about relative winter temperatures - It's not about length of daylight hours during winter - It's not about

Many comments here are confusing issues: - It's not about relative winter temperatures - It's not about length of daylight hours during winter - It's not about what your experience is with any of the above if you don't have the disposition to begin with He's saying "If you have this pre-disposition/afflliction plan for it accordingly before it's too late (dark skies are here) That includes a) artificial interior lighting b) working 30 minutes outside into your routine somehow and c) having an escape plan that includes a week in the sun somewhere in your winter timeframe. As a side note I have lived in many places including Boston and the Bay Area. The most depressed I ever felt was during El Nino driven winters in the Bay Area. I realized I would never make it a year in Seattle. Having said that, there were only 2 or 3 of those during my 10+ years there and I've never felt anything like seasonal depression. My wife though did suffer from it when we moved to Boston (and we ultimately left because of it)