The cause of widespread and severe diseases like Diabetes, Multiple sclerosis (MS) and Rheumatism is still unknown.
An entirely different and radical approach to the mystery was suggested many years ago by an independent Swedish investigator, Harald Bergengren. The theory was based on the suspected harmful effects of phosphate deficiency, which had never been taken into account by medical experts.
A selection of Harald Bergengren´s writings is available here.
The biography ‘The story of P ‘ – gives the background of the hypothesis.