Research shows that the effects of cannabis may help to protect the brain from the damage that is caused by a stroke. This is done by reducing the size of the area that was affected by the stroke. There has been research that has shown neuroprotective effects from cannabis that protects the brain in the case of other traumatic events, like concussions.
Colored impurities from the oil can be removed by adding activated charcoal to about one third to one half the weight or volume of the solvent containing the dissolved oil, mixing well, filtering, and evaporating the solvent. When decolorizing fatty oils, oil retention can be up to 50 wt % on bleaching earths and nearly 100 wt % on activated charcoal.
According to the U.S. National Library of Medicine, cannabis use for medicinal purposes dates back at least 3,000 years. It was introduced into Western medicine in the 1840s by W.B. O’Shaughnessy, a surgeon who learned of its medicinal properties while working in India for the British East Indies Co. It became useful because of its analgesic, sedative, anti-inflammatory, antispasmodic and anticonvulsant effects.
As a consumer, you can look at the manufacturer's website to see whether they batch-test their products, or ask them directly. You could also send a sample of your CBD oil to a testing facility yourself, something Bonn-Miller says he would do if he were trying to treat someone with a severe issue such as epilepsy. Testing can also determine whether the product contains pesticides, heavy metals, or other toxins.
Then came Reefer Madness. Marijuana, the Assassin of Youth. The Killer Weed. The Gateway Drug. For nearly 70 years the plant went into hiding, and medical research largely stopped. In 1970 the federal government made it even harder to study marijuana, classifying it as a Schedule I drug—a dangerous substance with no valid medical purpose and a high potential for abuse, in the same category as heroin. In America most people expanding knowledge about cannabis were by definition criminals.
The oil may be further refined by 1) alkali washing, or removing the heavy aromatic carboxylic acids with antibiotic properties, which may cause heartburn, gallbladder and pancreas irritation, and resistance to hemp antibiotics; 2) conversion of CBD to THC. Process 1) consists of dissolving the oil in a nonpolar solvent such as petroleum ether, repeatedly washing (saponifying) with a base such as sodium carbonate solution until the yellow residue disappears from the watery phase, decanting, and washing with water to remove the base and the saponified components (and evaporating the solvents). This process reduces the oil yield, but the resulting oil is less acidic, easier digestible and much more potent (almost pure THC). Process 2) consists of dissolving the oil in a suitable solvent such as absolute ethanol containing 0.05% hydrochloric acid, and boiling the mixture for 2 hours.
There are so many different CBD products out there to choose from, and it can be difficult to find the ones that are just right for you. To help you make an informed decision and enjoy CBD’s benefits to the fullest, we have put together several pages of invaluable information about CBD, its properties, its uses, and how YOU can best benefit from it.
CBD does not appear to have any psychotropic ("high") effects such as those caused by ∆9-THC in marijuana, but may have anti-anxiety and anti-psychotic effects. As the legal landscape and understanding about the differences in medical cannabinoids unfolds, it will be increasingly important to distinguish "medical marijuana" (with varying degrees of psychotropic effects and deficits in executive function) – from "medical CBD therapies” which would commonly present as having a reduced or non-psychoactive side effect profile.
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.
The side effects and risks involved with consuming marijuana-based products aren't clear, either, Bonn-Miller said. It's important to "determine cannabinoids that are useful therapeutically while understanding and using cannabinoids that are associated with less risk," he said. At least with CBD, he said, it doesn't appear to have the potential for addiction. That's different from THC, which has been associated with addiction, he said, and negative side effects, including acute anxiety.
Natural, legal and with no major side effects (so far), CBD is a marketer’s dream. Hemp-based health products are launching left, right and centre, cashing in while the research is in its first flush of hazy potential. As well as ingestible CBD (also sold as hemp or cannabis oils or capsules) the compound has become a buzzword among upmarket skincare brands such as CBD of London. Predictably, Gwyneth Paltrow is a proponent of the trend, and has said that taking CBD oil helps her through hard times: “It doesn’t make you stoned or anything, just a little relaxed,” she told one beauty website.
Stephanie Kahn, who with her husband, Jeffrey, runs the Takoma Wellness Center, a medical marijuana dispensary in Northwest Washington, says that about half of her 1,200 patients use CBD-rich products. Her dispensary offers several strains of high-CBD cannabis as well as CBD oil, with different ratios of CBD and THC, each of which she recommends for particular conditions. “We get questions about it every day,” she says. “A lot of our patients get relief with this, and a lot of times this works better than pharmaceutical drugs.”
Right now, there’s a good chance that you don’t really know what you’re getting from any source. Testing and labeling rules vary by state, but many states that allow legal cannabis also require some kind of testing to verify that the THC and CBD levels listed on the label are accurate. However, this testing is controversial, and results can vary widely between labs, Jikomes said. A study published in March found measurable variations in test results, with some labs consistently reporting higher or lower levels of cannabinoids than others. There are no guarantees that the label accurately reflects what’s in the product. For a 2015 study published in JAMA, researchers tested 75 products purchased in San Francisco, Los Angeles and Seattle and found that only 17 percent were accurately labeled. More than half of the products contained significantly lower levels of cannabinoids than the label promised, and some of them contained only negligible amounts of the compounds. “We need to come up with ways to confidently verify the composition of cannabis products and make this information available to consumers,” Jikomes said.
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