I recently figured out why I turned into an overweight couch potato on moving to Europe. It wasn't a good idea to continue my usual habit of wearing factor 50 sunscreen even on cloudy days in winter, because I developed a major vitamin D deficiency.
Where I live, it has been drizzling and overcast for the past ~eight weeks and I can feel my energy levels diving. I want to try an SAD lamp (light therapy).
There are so many quack products out there, but there's a list of recommended manufacturers from the SAD people here:
www.sad.org.uk/recommended-manufacturers/
I've spent hours searching for them at Amazon, but they're all very expensive. Maybe someone out there knows of an electronics seller where it's possible to get them cheaper?