When to Use: There’s a bit of a debate about using extra virgin olive oil in high-temperature cooking. A 2014 study published in the American Chemical Society’s Journal of Agricultural and Food Chemistry found that olive oil is more stable than certain seed oils for frying at temperatures between 320 and 374°F. Still, you may be best off using olive oil only for low-temp cooking and for drizzling on salads and veggies. 
These mounting developments in the elicited a problem amongst cannabis cultivators across the US: decades of selectively breeding cannabis to achieve the maximum amount of THC for a strong high reduced the overall preponderance of CBD in cultivars across the country to trace lows. Essentially, CBD had been selectively bred out of existence across the country.
Industrial hemp contains, by weight, far less CBD than CBD-rich cultivars such as Harlequin or Sour Tsunami. This means that producing a single 10 mL dose of CBD would require the cultivation and extraction of far more hemp than it would from whole-plant marijuana; thus raising the risk of exposing users to more contaminants. Hemp is classified as a “bioaccumulator,” or a plant that naturally absorbs toxicants from the soil.
What makes CBD so appealing is that it’s non-intoxicating, so it won’t get you high, though it “is technically psychoactive, because it can influence things like anxiety,” Jikomes said. Although much of the marketing blitz around CBD centers on the fact that you can take it without getting stoned, there isn’t much research looking at the effects of CBD when used in isolation, with a couple of exceptions. One is the use of CBD to treat seizures: CBD is the active ingredient in the only cannabis product that the Food and Drug Administration has signed off on — a drug called Epidiolex, which is approved for treating two rare forms of epilepsy. Animal models and a few human studies suggest that CBD can help with anxiety, but those are the only conditions with much research on CBD in isolation.
It's a little more uniform when the product is absorbed by smoking or vaping the oil, Ward said. But, "there are obvious concerns about smoking something." A 2007 review published in the journal JAMA Internal Medicine found that smoking marijuana resulted in similar declines in respiratory system health as smoking tobacco. A similar review published in 2014 in The American Journal of Cardiology found that marijuana smoke inhalation can increase the chances of heart attack or stroke. Neither review analyzed the effects of vaping cannabis oil alone, so it's unclear if it has the same health risks as smoking other marijuana products.
We went back and forth like that for several rounds, yelling at each other in 30-degree weather in front of an RV wrapped in marijuana-leaf graphics and blasting Bob Marley music. Finally, he stopped trying to enlighten me and shuffled off to let me buy my lollies in peace. As I tore into my new treats, I realized the whole thing had been a scene from the internet’s dominant cannabidiol discourse come to life: Some money had been spent and some opinions had been said, but no one had gained any information.

Hemp is possibly one of the earliest plants to be cultivated.[109][110] An archeological site in the Oki Islands near Japan contained cannabis achenes from about 8000 BC, probably signifying use of the plant.[111] Hemp use archaeologically dates back to the Neolithic Age in China, with hemp fiber imprints found on Yangshao culture pottery dating from the 5th millennium BC.[108][112] The Chinese later used hemp to make clothes, shoes, ropes, and an early form of paper.[108] The classical Greek historian Herodotus (ca. 480 BC) reported that the inhabitants of Scythia would often inhale the vapors of hemp-seed smoke, both as ritual and for their own pleasurable recreation.[113]


There are several techniques for extracting CBD oil from the cannabis plant. The extraction method determines whether the active CBD compound gets processed as a “full spectrum oil” or an “isolate.” A CBD isolate is a pure compound with no other active compounds or cannabinoids at all. A full spectrum oil contains other active plant compounds in addition to the CBD such as CBN (cannabinol) and cannabis terpenes (the part of the plant that gives the plant its aroma), and more. 
In the meantime, some physicians are forging ahead — and cashing in. Joe Cohen is a doctor at Holos Health, a medical marijuana clinic in Boulder. I asked him what CBD is good for, and he read me a long list of conditions: pain, inflammation, nausea, vomiting, intestinal cramping, anxiety, psychosis, muscle spasms, hyperactive immune systems, nervous system degeneration, elevated blood sugar and more. He also claimed that CBD has anti-cancer properties and can regenerate brain cells and reduce the brain’s levels of amyloid beta — a kind of protein that’s been linked to Alzheimer’s disease. I asked for references, noting that most of these weren’t listed in the Academies report or a similar review published in the Journal of the American Medical Association. “I think you just have to Google search it,” he said. It’s true that a preliminary study found hints that cannabinoids might reduce beta amyloid proteins in human brain cells, but the study was done in cells grown in a lab, not in people. As for cancer, the FDA sent warning letters last year to four companies that were selling products that claimed to “prevent, diagnose, treat or cure” cancer.
It should be noted that recreational use of marijuana (high THC, low CBD cannabis) does result in dependence (but different from narcotics or alcohol, and not as debilitating). Chronic use of THC may be associated with atrophy in certain areas of the brain and reduction of certain cognitive functions (at this point, studies are not conclusive). Interestingly, studies have shown that taking CBD oil regularly can restore areas of the brain that have become atrophied in marijuana abusers.
When it comes to your health, "fat" is not necessarily a dirty word. You need some fat in your diet, and it actually performs some pretty impressive tasks like boosting energy, supporting cell growth, protecting your organs, keeping your body warm, and aiding in nutrient absorption and the manufacturing of hormones, according to the American Heart Association (AHA). And oils can be a great source of these healthy fats, but choosing the right variety is key.
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Distinguishing cannabis and hemp can be confusing, so let's make it simple. There are many varietals of Cannabis sativa, all of which have different amounts of THC and CBD. Cannabis sativa varietals that have more than 0.3 percent THC are commonly referred to as marijuana. Hemp is any varietal of Cannabis sativa that contains less than 0.3 percent THC.
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