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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]
Cannabis contains over 100 different cannabinoid compounds, many of which have displayed psychoactive effects. The most distinguished cannabinoids are tetrahydrocannabinol (THC) and cannabidiol (CBD), with THC being the primary psychoactive agent. [24] [12] The effects of THC and CBD are salient regarding psychosis and anxiety. [25]
THC, the main psychoactive component of cannabis, may only be detectable in saliva and oral fluid for 2–24 hours in most cases. [8] [9] The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10]
Nearly half of U.S. states now permit recreational marijuana, but studies say there are risks to frequent usage.
A new study has shown a spike in marijuana use among seniors in the last decade — specifically elderly women and those who are married. Marijuana use spikes among women over 65, study say [Video ...
Smoking marijuana daily for years may increase the risk of potentially deadly head and neck cancers, a new study found. ... Those men and women, whose average age was 46, were then matched with ...
Δ-8-tetrahydrocannabinol (delta-8-THC, [a] Δ 8-THC) is a psychoactive cannabinoid found in the cannabis plant. [1] It is an isomer of delta-9-tetrahydrocannabinol (delta-9-THC, Δ 9-THC), the compound commonly known as THC, with which it co-occurs in hemp; natural quantities of ∆ 8-THC found in hemp are low.
Both Delta-9-THC and 11-OH-THC are psychoactive. The metabolism of THC into 11-OH-THC plays a part in the heightened psychoactive effects of edible cannabis. [65] Next, 11-OH-THC is metabolized in the liver into 11-COOH-THC, which is the second metabolic product of THC. [66] 11-COOH-THC is not psychoactive. [64]