Sunlight (heliotherapy) was often a part of healing and was used to treat many disorders, such as tuberculosis, rickets in children and war wounds.    From Wordnik.com.  [Summit Daily News - Top Stories] Reference

As milk and other foods were supplemented with vitamin D, heliotherapy faded, and its decline was greatly enhanced by the fear of acquiring skin cancer.    From Wordnik.com.  [Summit Daily News - Top Stories] Reference

The operative surgical quality but that he was reluctant to shed human blood even when the end justified the means, preferring, in their natural order, heliotherapy, psychophysicotherapeutics, osteopathic surgery.    From Wordnik.com.  [Ulysses] Reference