This would not preclude adding iodine to salt to achieve an important public health aim, namely to reduce the risk of iodine deficiency in vulnerable groups.

An iodine deficiency has an impact on the thyroid.

Iodine deficiency can lead to low energy levels and poor metabolism.

When diseases are caused by environmental influences, such as iodine deficiency or lead poisoning, their resultant symptoms are unequivocally agreed to be acquired characteristics.

Other prevalent diseases were rickets, which she treated very successfully with doses of cod liver oil, and goiter due to iodine deficiency.