First a leader has to adopt the principles of karma-yoga in his own life; then he has to diagnose the disease of the people; then the medicine is to be prescribed and the proper diet given. Simply to offer the suffering people a sense-gratificatory cure that titillates their senses—this is not going to make them healthy. Rather, this will spread the disease further, and at one stage the doctor himself will be infected and finally die from it.
Forgetfulness of the Supreme Lord, Viṣṇu, is human society's real and original disease. So, if one does not treat this ailment but instead shows insincere and shallow concern for the patients, one might give them some momentary relief and pleasure, but ultimately such a course of action cannot cure them permanently. If the patient goes for proper medicine and diet but is instead administered bad medicine and diet, then he is certainly in the jaws of death.
The remnants of food offered to the Supreme Lord, known as prasādam, is the best diet for all patients. And to discuss and hear topics glorifying the Supreme Lord, to see the Lord's Deity form and offer worship to Him, and to completely surrender oneself to the Lord—these constitute the greatest medicine, the panacea.