We can see, therefore, that the intake of the miracle substance iodine has to be measured carefully, for both deficiency and excess mean trouble. Thus, to avoid harm, it is imperative to give iodine only in high potencies of homoeopathic dilution.
Some years ago, since the Swiss and the inhabitants of other land-locked countries often displayed signs of iodine deficiency, Dr Eggenberger from Herisau, a noted goitre specialist, supported the idea of adding iodine to common salt. This was meant to help those people in Switzerland who tended toward goitre, but it caused those with a tendency to Graves’ disease having to put up with an increased heart beat and other unpleasant side effects.
Sea salt and sea water both contain iodine, and for many people these can have the effect of a specific medicine. But those who have a predisposition towards Graves’ disease will find it better to take the small amounts of iodine found in plants, which will give them no trouble.