Supplementing Vitamin D comes with hidden costs. Stick with raw sunlight.
Discussion
What you're trying to do is use a fallacy, specifically, bad company fallacy. Is it just because I hadn't mentioned that they need to be good quality supplements, and that there aren't areas where sunlight is easily attainable, especially in the north of some countries?
You’re saying I’m using a guilt by association fallacy?
Regardless of quality or region, I believe Vit D supplements are extremely rarely justifiable because of the biological downsides I shared.