Cold weather change insulin needs

We have “natural light” bulbs around our house - not for medical reasons but because I prefer the look. I don’t know if using them has had an unknown effect for anyone here but you did make me think of a woman I used to work with who had SAD. She worked in real estate - where being assertive is not just a benefit but a necessity, and she was no shrinking violet by any means. Not to make fun of your having SAD, but when the winter months came around joked about how we had better stock up on the sunlight bulbs or things might get ugly. They seemed to help.