Tobacco Tactics investigates tobacco industry strategies and tactics for undermining tobacco control efforts and provides rigorously researched reports, profiles, and information on industry players, allies, and activities

These habits and other factors: bad oral hygiene smoking or smoking drinking coffee or tea use of antibiotics (may disrupt the normal balance of bacteria in the mouth) dehydration medicines containing chemical bismuth (eg Pepto-Bismol for stomach uptake) do not produce enough saliva (use medication to prevent disease or saliva production) regularly use garbage containing peroxide, witch hazel or menthol To receive head and neck radiation therapy smoking or smoking drinking coffee or tea use of antibiotics (may disrupt the normal balance of bacteria in the mouth) dehydration medicines containing chemical bismuth (eg Pepto-Bismol for stomach uptake) do not produce enough saliva (use medication to prevent disease or saliva production) regularly use garbage containing peroxide, witch hazel or menthol To receive head and neck radiation therapy Apart from these, black hairy tongue is more common to men, to those who use intravenous medication, and to those who are HIV positive

It was published in the journal Bioelectronic Medicine : Here are the somewhat technical conclusions: A review of the literature indicates that a significant disruption of cholinergic neurotransmission might be a central issue for both LC/ME/CFS [long COVID/Myalgic Encephalomyelitis/Chronic Fatigue Syndrome] and PVS [post-vaccination syndrome]
Studies suggest that women start and continue SLT due to factors like marital stress, socioeconomic burdens, limited support systems, social norms, peer pressure, misconceptions, ignorance, and a lack of awareness about complications and risks 21,22,23,24