Hemp oil or hempseed oil is obtained by pressing hemp seeds. Cold pressed, unrefined hemp oil is dark to clear light green in color, with a nutty flavour. The darker the color, the grassier the flavour. It should not be confused with hash oil, a tetrahydrocannabinol-containing oil made from the Cannabis flower, hailed by some for its medicinal qualities.
Hemp oil is a "drying oil", as it can polymerize into a solid form. Due to its polymer-forming properties, hemp oil is used on its own or blended with other oils, resins, and solvents as an impregnator and varnish in wood finishing, as a pigment binder in oil paints, and as a plasticizer and hardener in putty. It has uses similar to linseed oil and characteristics similar to tung oil.
Guzmán leads me around his cramped lab—centrifuges, microscopes, beakers, petri dishes, a postdoc researcher in a white smock extracting tissue from a mouse corpse pinned under bright lights. It’s your typical bioresearch lab, except that everything is devoted to the effects of cannabis on the body and brain. The lab focuses not just on cancer but also on neurodegenerative diseases and on how cannabinoids affect early brain development. On this last topic the Guzmán group’s research is unequivocal: Mice born of mothers regularly given high doses of THC during pregnancy show pronounced problems. They’re uncoordinated, have difficulty with social interactions, and have a low anxiety threshold—they’re often paralyzed with fear at stimuli, such as a cat puppet placed near their cage, that don’t upset other juvenile mice.
"We still don't fully understand all of the mechanisms involved in CBD's actions," says Marcel Bonn-Miller, Ph.D, who studies CBD and its effects, primarily on PTSD. "We know some pieces but definitely not the whole story at this point. A lot of our understanding of the many potential benefits of CBD is rooted in work either on the cellular level or in preclinical models with rodents."
Cannabis Oil: Cannabis oil is typically made from marijuana with a high THC percentage. Therefore, it must be purchased in an area where marijuana is legal or can be obtained with a prescription. The amounts of compounds, including CBD and THC, will drastically vary from product to product. Commercially produced cannabis oils will have more controlled concentrations of CBD and THC for medical purposes.
In a study, 24 smoker subjects, who were randomly selected to receive either placebo or a Cannabidiol inhaler, were asked to take a puff from their inhaler each time they craved to smoke. The subjects were included on the basis of >10 cigarette consumption a day, who wished to quit this habit. They were devoid of any history of psychiatric illness or physical health issue. Observations revealed that those subjects who took cannabidiol inhaler experienced a 40 percent reduction in their cigarette consumption, whereas those who were on placebo underwent no change.
He blinks thoughtfully, then turns to his computer. “However, let me show you something.” On his screen flash two MRIs of a rat’s brain. The animal has a large mass lodged in the right hemisphere, caused by human brain tumor cells Guzmán’s researchers injected. He zooms in. The mass bulges hideously. The rat, I think, is a goner. “This particular animal was treated with THC for one week,” Guzmán continues. “And this is what happened afterward.” The two images that now fill his screen are normal. The mass has not only shrunk—it’s disappeared. “As you can see, no tumor at all.”
Cannabis has been around for thousands of years and is believed to have originated in South or Central Asia. The two main species of cannabis are Cannabis sativa and Cannabis indica. Both Cannabis sativa and indica contain varying amounts of psychoactive and nonpsychoactive components. Cannabis sativa is more commonly known for its stimulatory, mental effects while Cannabis indica is more known for its relaxing, body-calming effects.
In 1992 Mechoulam’s quest for quantification led him from the plant itself to the inner recesses of the human brain. That year he and several colleagues made an extraordinary discovery. They isolated the chemical made by the human body that binds to the same receptor in the brain that THC does. Mechoulam named it anandamide—from the Sanskrit for “supreme joy.” (When asked why he didn’t give it a Hebrew name, he replies, “Because in Hebrew there are not so many words for happiness. Jews don’t like being happy.”)
I lean over to sniff one of the powdery, tightly clustered flower buds, purple-brown and coursing with white wisps. These tiny trichomes fairly ooze with cannabinoid-rich resin. This strain is called Highway Man, after a Willie Nelson song. Hybridized by Hague, it’s a variety loaded with THC. The best parts will be trimmed by hand, dried, cured, and packaged for sale at one of Mindful’s dispensaries. “This whole room will be ready for harvest in just a few days,” Hague notes with the subtle smirk of a competitive breeder who’s won international awards for his strains.
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