Over the years, CBD has shown that it may play a therapeutic role in sleep regulation, adjusting sleep cycles, inducing sedative effects, increasing total sleep time and less frequent awakenings, reducing dream recall, and it has even been shown to REM sleep. Some of these studies have been levied against comparison with placebo medications, and some studies have been done looking very closely at individuals’ physiology as they sleep. Some studies even document a return of sleep disturbances once the CBD is removed from treatment. Doses have been explored ranging from 40, 80, or 160 mg per day, up to 600mg. CBD has been tried both alone and in combination with other cannabinoids.
Here, a study of 26 participants, were tried with CBD once, and then placebo once, after 2 weeks, and they found no significant impact of the CBD on sleep. The authors note that the small window (of personnel studied and of episodes of dosing CBD) is a concerning limitation. Another interpretation of these results is that CBD is not acting as an acute sedative. Its function may be situational (for certain states of mind, CBD may work in a quieting way) or it may be impacting the body at a much more basic level (for example, if it is reducing levels of stress or depression hormones, the effect of improving sleep may have a more gradual impact.
A related point – it is important for us to take note of studies that don’t necessarily have fireworks associated. Not every study will show amazing effects or overwhelming results. This helps us consider what is good or what is missing from the papers we read – and helps create a more realistic research culture. Every study helps teach, even if it’s not showing breathtaking results.
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