Then later I found articles like this one <a href="http://www.ncbi.nlm.nih.gov/pubmed/10616042">http://www.ncbi.nlm.nih.gov/pubmed/10616042</a> and read some old books about uric acid (readit here: https://archive.org/details/uricacidasafact02haiggoog )and decided to get minerals except potassium and magnesium from food.