It’s nice that the new label will be listing potassium, as there’s less of a deficiency issue with vitamins A and C. As for vitamin D?
If you’re vitamin D deficient, drink milk. It’s fortified with Vitamin D mainly because kids in the frigid northern portions of the country weren’t getting enough sunlight during the winter. If you don’t like plain you can get chocolate milk mix with no added sugar. If you’re lactose intolerant, then take it as a sign that God hates you (and the rest of the 50-60% of the population that’s also lactose intolerant).
The article is quite comprehensive – it’s not a quick read.
The whole conversation around weight loss and diet is nuanced, complicated, and not easily parsed. All you’ll get are personal testimonials and I’ve discovered that the only thing that’s worked for me is to figure out what worked for me. But I keep compiling the various articles to glean what I can from them to improve.