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6
votes
1answer
65 views

Death from too little salt?

I know that sodium deficiency can be deadly. But why is it deadly? Is it because of your muscles getting so rigid that you can't get something with salt in it? Is it because of your brain not able to ...
6
votes
1answer
234 views

iodine: how did they manage without it in old ages? (People who were living far from the sea)

Knowing that today iodine comes either from fish products or (artificially) enriched table salt, how did people who lived far from the sea survive before (especially during the the Middle Ages)? Edit ...
4
votes
4answers
310 views

Why can't you just take a vitamin? Why you need a healthy diet on top of that?

From what I understand, your body needs certain amounts of vitamins and minerals to maintain health. Why can't we just take enough pills to obtain these vitamins and minerals?
2
votes
1answer
172 views

How are minerals formed by biological processes?

News to me is that about 4500 of the 4900 minerals on Earth have been created by life. What are some examples of such processes? Are some minerals formed inside the human body?
3
votes
0answers
118 views

What is the biochemical pathway of fluoride?

Fluoride is a common active ingredient in tooth paste to prevent dental caries. It is also added or removed from the water supply in some communities for the same reason, but in children only. My ...