I see this is an important topic for the health of humanity as a whole and it is a principal that goes across all divides of race or religion. So I offer from my Faith a hint as to how unhealthy this practice is.
"Backbiting quencheth the light of the heart, and extinguisheth the life of the soul." Bahá’u’lláh: The Kitab-i-Iqan, p. 193
In another tablet, giving ideas as to the best use of language, this was offered to consider; "...whereas the fire of the tongue devoureth both heart and soul..... the effects of.. this... endureth a century.
This is the practice asked of as a Baha'i;
"I hope that the believers of God will shun completely backbiting, each one praising the other cordially and believe that backbiting is the cause of Divine Wrath, to such an extent that if a person backbites to the extent of one word, he may become dishonored among all the people, because the most hateful characteristic of man is fault-finding. One must expose the praiseworthy qualities of the souls and not their evil attributes. The friends must overlook their shortcomings and faults and speak only of their virtues and not their defects." ‘Abdu’l-Bahá, Lights of Guidance, p. 91
It would be helpful if others post from their scriptures, or their own worldview, thoughts as to how to stop this habit.
Regards Tony