MDMA can cause long-term damage to the serotonin system with a certain dose and frequency, while classic psychedelics have a higher level of physical safety. Nonetheless, MDMA is within the subset of classic psychedelics in terms of its subjective effects.
Melatonin inhibits the production of GnRH, LH, testosterone, and estrogen, making it a key factor in seasonal breeding and reproduction in animals. High levels of melatonin can lead to decreased fertility in both male and female animals.
The left hemisphere of the brain is responsible for everything on the right side of the body, while the right hemisphere controls the left side. This may explain why some people struggle to switch their nostril focus during meditation.
Producing essential oils such as frankincense at an industrial level requires a large amount of resin which surpasses the supply of existing trees, however, it has medicinal properties. A distillery in Salala built the first modern frankincense distillery in 2010 after discovering vast reserves of the plant in Oman.
The idea that wormwood causes hallucinations and convulsions is a myth. While thujone, which comes from wormwood oil, can cause seizures, the amounts found in absinthe are restricted by law and too low to have any significant effects.
Despite the widespread belief that cigarettes would be banned if ever shown to cause cancer, cigarette smoking remains prevalent decades later, with over 200 billion cigarettes smoked in the United States annually.