How much do you know about the wacky weed and its odd effects?
How much do you know about the wacky weed and its odd effects? How exactly does marijuana provide its high, and who discovered the effects of smoking the plant in the first place? The marijuana plant isn’t used only for smoking; its fibers can also be made into rope or fabric. Perhaps the oddest use of hemp rope on record is as a method for transporting giant stone statues. In 2012, archaeologists created reproductions of Easter Island’s statues, trying to figure out how ancient people may have moved the iconic 9,600-lb. (4.35 metric tons) heads from their quarry. Theorists have suggested everything from log rollers to extraterrestrial help for the task, but in 2012, California State University Long Beach archaeologist Carl Lipo proved that all that was needed is hemp rope.
What’s the difference between hemp and pot, anyway? A single genetic switch. In 2011, researchers from the University of Saskatchewan announced that they’d discovered the genetic alteration that allows psychoactive cannabis plants (Cannabis sativa) to give users a high (as compared to industrial hemp plants, which are no fun for smoking).
In contrast, marijuana plants do produce THCA but don’t create much of a substance called cannabidiolic acid (CBDA), which occurs in abundance in hemp but competes with THCA for raw materials. Thus, hemp is rich in non psychoactive CBDA, while marijuana is chock full of mind-bending THC.
Smoking up could be a very different experience for men and women, according to a 2014 study in the journal Drug and Alcohol Dependence. In research on rats, Washington State University psychologist Rebecca Craft found that females were more sensitive to cannabis’ painkilling qualities, but they were also more likely to develop a tolerance for the drug, which could contribute to negative side effects and dependence on marijuana.
Marijuana’s high is getting increasingly higher. In 2016, researchers measured the levels of marijuana’s active ingredient, THC, in more than 38,600 samples of street marijuana seized by the Drug Enforcement Agency over 20 years. They found that the levels of THC rose from about 4 percent in 1995 to about 12 percent in 2014.
Meanwhile, levels of the non-psychoactive compound cannabidiol fell from 0.28 percent in 2001 to 0.15 percent in 2014, the researchers reported in the journal Biological Psychiatry. As a result, THC levels were 14 times the level of cannabidiol in 1995; in 2014, that ratio had grown to 80.