As with a fermented food like kombucha, slight natural variations are normal and to be expected in a product such as CBD oil because it is made from living plants. Changes in the weather, soil, and water can all impact the biology of the source material. While we verify Certificates of Analysis (and take many other criteria into consideration during our review process), even the most reputable five-star companies have no way to control for every variable in this organic process.
Even though most manufacturers claim that CBD does not have any side effects, research says otherwise. Sure, most people can tolerate the impact of CBD just fine, but a small portion of the population have been noted to experience not-so-adverse side effects. According to Cannabis and Cannabinoid Research, the most common results are tiredness, change in weight, diarrhea, fatigue.
One study comparing the effects of THC and CBD even found that, while THC increased anxiety by activating the neurotransmitters involved in the "fight or flight" response, CBD actually repressed autonomic arousal—or the nervous system response associated with sudden increases in heart rate or respiration. In other words, CBD is ideal for people looking to relax and unwind—not get out of their minds.
Research is beginning to show that CBD is different than other well-studied cannabinoids. All cannabinoids act as ligands, meaning they dock onto the binding site of a protein and have the ability to modulate a receptor’s behavior. CB1 receptors are widely distributed, but are particularly abundant in areas of the brain, including those concerned with movement, coordination, pain and sensory perception, emotion, memory, cognition, autonomic and endocrine functions. (2)
Cannabinoids are neuroprotective, meaning that they help maintain and regulate brain health. The effects appear to be related to several actions they have on the brain, including the removal of damaged cells and the improved efficiency of mitochondria. CBD and other antioxidant compounds in cannabis also work to reduce glutamate toxicity. Extra glutamate, which stimulates nerve cells in the brain to fire, causes cells to become over-stimulated, ultimately leading to cell damage or death. Thus, cannabinoids help protect brain cells from damage, keeping the organ healthy and functioning properly. CBD has also been shown to have an anti-inflammatory effect on the brain.