internal blood loss
Slow, chronic blood loss within the body — such as from a peptic ulcer, a hiatal hernia, a colon polyp or colorectal cancer — can cause iron deficiency anemia. Gastrointestinal bleeding can result from regular use of some over-the-counter pain relievers, especially aspirin. A lack of iron in your diet.
Calcium loss is easy: that’s from acidic foods.
Most foods are highly acidic, and the body uses calcium to counteract the acid. The calcium comes from bones and teeth. Not supplementing leads to brittle bones and lost teeth.
Magnesium and potassium salts should also be supplemented — magnesium deficiency (salads, etc) is a bigger problem than calcium anymore.
I personally think TOO much calcium is added, which leads to heart problems.
Calcium contracts muscles
magnesium relaxes muscles.
Unbalanced amounts can lead to issues. But few people have excess magnesium problems.
Yes, we deal with it by the body leeching calcium from the teeth and bones. Perfectly natural.
You can’t lump all of them together. Each vitamin or mineral serves a function in the body.
Yes ,”detoxing” like that is quackery. You can drink a gallon of water to do the same thing.