The calcium mag ratio of milk is crap, consuming too much dairy can lower mag, I can vouch for that. At one point I was craving chocolate every day. But Cacao is a double edged sword. It can be amazing for mental performance and digestion, but when I took it at the wrong time or too much of it, it made my stomach so sick I had to force vomit it all out. And I tried many different 100% brands with no sugar and sweeteners. That includes just the powder, with oil and oil removed, raw (below 40 degrees), processed (like cocoa mass plus butter), just the dark butter fat and the white butter fat. Also tried the ceremonial cacao, basically every type of chocolate produce you can think of. I also noticed something weird. When I took too much of it at one point I kind of received some bad energy from other people, almost got into fights without me doing anything. It was weird. The indigenous people say it has a spirit, who knows. I completely stopped for several months, now from time to time I eat a bit. Sometimes I crave a piece or 2 and the smell gets attractive, then sometimes when I smell it it smells off. When I then proceed eating it I instantly know it wasn´t a good idea.. and it´s not the caffeine content, with certain coffees and black teas I have no issue. I also don´t think its the oxalates, as other ox foods don´t cause that much problems. Anyhow, could write lots about Kakau, as the natives call it.
Another thing is that mag helps against EMF, so that was certainly another reason why I craved it. I also find that it´s the fat in 100 % dark chocolate that can help against constipation. But just the cacao powder itself can be useful. Half a teaspoon to a teaspoon can already relieve constipation. Calcium can interfere with HCI production too, hence too much calcium = constipation. I also find that mixing dairy and cooked meat results in ultimate constipation. Eating these things hours apart is no issue. Another reason why people on carnivore, at least in my opinion and the one of dr. berg, get issues with too low mag is that too much phosphorus (think meat), can lower mag. And Mg, Ca and P are in direct relationship with each other. If you have too much of one it can lower the other. I found that whenever I ate too much meat (especially red meats) I got lower leg cramps. I can only explain it as indigesting too much phosphorus. I tried to compensate that with avocados, nuts and mollusks, but it didnt work. I had to lower meat consumption and increase fat. But I find meat far worse for lowering mag than dairy. And on a side note.. you want a good calcium phosphorus ratio then choose goat over cow or sheep dairy.