THC. This is the main psychoactive compound in cannabis. THC is responsible for the “high” that most people associate with cannabis. Although these findings support the idea of marijuana as a "gateway drug," the majority of people who use marijuana don't go on to use other "harder" drugs. It's also important to note that other factors besides biological mechanisms, such as a person’s social environment, are also critical in a person’s risk for drug use and addiction. Read more about marijuana as a gateway drug in our Marijuana Research Report. Can a person overdose on marijuana? A 2014 study that explored the relationship between cannabis use and lung disease suggested that it was plausible that smoking cannabis could contribute to lung cancer, though it has been difficult to conclusively link the two. The hallucinogenic effects of cannabis are mainly due to a compound in cannabis called THC (tetrahydrocannabinol).

Garden space: Cannabis can be grown successfully in small or large spaces, but it’s important to know how much space you have to work with before you start building out a garden. For example, if growing in a small space, consider growing indicas, which tend to grow shorter and bushier. Introduced species have been observed to undergo rapid evolutionary change to adapt to their new environments, with changes in plant height, size, leaf shape, dispersal ability, reproductive output, vegetative reproduction ability, level of dependence on the mycorrhizal network, and level of phenotype plasticity appearing on timescales of decades to centuries. [35] Invasive species can be more adaptable in their new environments than in their native environments, occupying broader ranges in areas where they are invasive than in areas where they are native. Hybridization between similar species can produce novel invasive plants that are better adapted to their surroundings. Polyploidy is also observed to be strongly selected for among some invasive populations, such as Solidago canadensis in China. Many weed species are now found almost worldwide, with novel adaptations that suit regional populations to their environments. [25] Negative impacts Invasive Canada Goldenrod as a roadside weed in Poland Australia, 1907: Cattlemen survey 700 carcasses of cattle that were killed overnight by a poisonous plant. [36]

Weed All About It Book

Substance Abuse Center for Behavioral Health Statistics and Quality. Results from the 2018 National Survey on Drug Use and Health: Detailed Tables. SAMHSA. https://www.samhsa.gov/data/report/2018-nsduh-detailed-tables Accessed December 2019. Before you start growing, you’ll have to determine whether you want to grow indoors or outdoors (more below). You can grow weed pretty much anywhere—it just depends what space, equipment, and resources you have available. Smoking cannabis carries similar risks to smoking tobacco. This may be due to inflammation and irritation of the airways. People also report less academic and career success. For example, marijuana use is linked to a higher likelihood of dropping out of school. 18 It's also linked to more job absences, accidents, and injuries. 19 Is marijuana a gateway drug? Define the term weed". forages.oregonstate.edu. Oregon State University Forage Information System. June 2009.

Galli JA, Sawaya RA, Friedenberg FK. Cannabinoid Hyperemesis Syndrome. Curr Drug Abuse Rev. 2011;4(4):241-249. Evidence suggests that oral cannabinoids are effective against nausea and vomiting caused by chemotherapy, and some small studies have found that smoked cannabis may also help to alleviate these symptoms. Memory loss: One study found that smokers of potent cannabis strains (skunk, for instance) may have a higher risk of acute memory loss. Immune response: A 2019 study showed that frequent cannabis use may affect the immune system, but more studies are necessary to confirm this. The concept of weeds also overlaps with the concept of invasive species, both in the sense that human activities tend to introduce weeds outside their native range, and that an introduced species may be considered a weed. Many weed species have moved out of their natural geographic ranges and spread around the world in tandem with human migrations and commerce. Weed seeds are often collected and transported with crops after the harvesting of grains, so humans are a vector of transport as well as a producer of the disturbed environments to which weed species are well adapted, resulting in many weeds having a close association with human activities. [28] [29]The researchers found that the children who received the CBD solution went from having around 12 seizures per month to an average of six seizures per month. Three children receiving CBD did not experience any seizures at all. Morales P, et al. (2017). Molecular targets of the phytocannabinoids: A complex picture. Phytocannabinoids. DOI: But cannabis can also have some problematic side effects for certain people. Side effects may include:

However, the study also found a high rate of side effects linked to CBD. More than 9 in 10 of the children treated with CBD experienced side effects — most commonly vomiting, fatigue, and fever.Woodfield, Derek R. White clover, New Zealand's competitive edge. Symposium NZ Agronomy Society and Grassland Association at Lincoln University, New Zealand, November, 1995 Anslinger reportedly kept files on jazz musicians titled “Marijuana and Musicians,” and monitored band mates who played alongside Louis Armstrong, Count Basie, and Duke Ellington, among others. And he began his federal campaign against the drug by publishing a report titled “Marijuana: Assassin of Youth” in 1937.