Tobacco – Shamans and Smokers

Tobacco contains nicotine, one of the most toxic plant-based substance. Nicotine stimulates the nervous system and the production of adrenaline, while blocking the transmission of nerve signals, so that feelings of hunger, heat or pain are inhibited. Isolated for the first time in the 19th century, numerous medical studies have in the recent decades shown its harmful effect on health. Considered to be highly addictive, the consumption of tobacco is related to a number of health issues including cardiovascular diseases and cancer.

Tobacco leaves have antifungal and antimicrobial properties, having been used as an insecticide in agriculture since the XVIII century. The oil extracted from the seeds lacks nicotine and has applications in the paint and varnish industry and as feed for livestock.

from Hacker News https://ift.tt/3aP9ycm