Seasonal depression or vitamin D3 deficiency? (Yep. And winter’s a asshole.)
TL;DR: Dark-ass winter months fuck with your brain—UVB ghosts out, skin quits making D3, circadian rhythms go tits up, and boom, you’re a grumpy blanket-wrapped shitshow. What folks call “seasonal depression” is often low D3 piled on shitty light habits. Fix the basics (light, D3, sleep, movement), and stop letting winter kick your ass. Why…