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In dogs, the minimum lethal dose of THC is over 3000 mg/kg. [20] According to The Merck Index, [21] the LD 50 of THC (the dose which causes the death of 50% of individuals) is 1270 mg/kg for male rats and 730 mg/kg for female rats from oral consumption in sesame oil, and 42 mg/kg for rats from inhalation. [22]
A 2012 review of cannabis use and dependency in the United States by Danovitch et al said that "42% of persons over age 12 have used cannabis at least once in their lifetime, 11.5% have used within the past year, and 1.8% have met diagnostic criteria for cannabis abuse or dependence within the past year. Among individuals who have ever used ...
There is a slight increase in dose proportionality in terms of peak and area-under-the-curve levels of THC with increasing oral doses over a range of 2.5 to 10 mg. [22] A high-fat meal delays time to peak concentrations of oral THC by 4 hours on average and increases area-under-the-curve exposure by 2.9-fold, but peak concentrations are not ...
In the US, men are over twice as likely to use marijuana as women, and 18–29-year-olds are six times more likely to use as over-65-year-olds. [47] In 2015, a record 44% of the US population has tried marijuana in their lifetime, an increase from 38% in 2013 and 33% in 1985. [47]
Other concerns include difficulties for drug testing due to novel metabolites, or high potency/binding affinity of isomers for cannabinoid receptors showing potential for abuse (i.e., THCP, which has 33× the binding affinity of Δ 9-THC) [70] [71] From 2021 to 2023, the Δ 8-THC market generated US$2 billion in revenue. [72]
Researchers found that 63% of lifetime heavy cannabis-using participants and 68% of recent cannabis users showed reduced brain activity during their working memory task.
Cannabis material can be leached in high-proof spirits (often grain alcohol) to create a "Green Dragon". Cannabis can also be consumed as a cannabis tea and many other beverages. Although THC is lipophilic and only slightly water soluble (with a solubility of 2.8 mg per liter), [13] enough THC can be dissolved to make a mildly psychoactive tea ...
His new study found that the number of moderately injured drivers with concentrations of THC above 5 nanograms per milliliter rose from 1.1 percent before cannabis was legalized to 3 percent after ...