“The Schumann Resonance signal provides a homeostatic control of brain activity. Therefore increased and decreased Schumann Resonance intensity, produced by increased and decreased solar activity, is shown to produce homeostatic relationships with cancer, cardiac, reproductive and neurological disease and mortality rates, including anxiety, depression and suicide. This study has found significant homeostatic relationships between the monthly mean sunspot number and the suicide rates in Christchurch, New Zealand. An adaptive response appears from high, middle, low and very low solar activity over the 11-year sunspot cycle from 1988 to 1998.”