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40 papers
Some research suggests that whole-plant cannabis compounds (like THC, CBD, other cannabinoids, terpenes, and flavonoids) can interact so the plant’s effects differ from CBD alone. Healthline explains three CBD types — full-spectrum, broad-spectrum, and isolate — and notes legal, safety, and labeling limits. The article says there is evidence for…
This review says cannabidiol (CBD) is a non‑psychoactive cannabis compound that has antioxidant and anti‑inflammatory actions in lab and some clinical studies. CBD can act directly to neutralize reactive molecules and indirectly by changing cell signals and antioxidant enzymes. Experiments in cells and animals show CBD lowers markers of oxidative…
This review collected human studies on how cannabidiol (CBD) is absorbed, distributed, and cleared. From 792 records, 24 studies reported pharmacokinetic (PK) data. Results varied by how CBD was given and by formulation. For example, smoking produced faster and higher blood levels than oral or oromucosal routes. The authors concluded…
This 2017 review of studies up to 2014 looked at how cannabis and related drugs affect sleep. The authors found early, mixed evidence: cannabidiol (CBD) showed possible benefit for insomnia and some sleep disorders, THC might make people fall asleep faster but could harm sleep quality over time, and some…
This brief review explains what is known about medical cannabis and its main chemicals. Cannabis has many natural compounds, and the two best-known are Δ9‑tetrahydrocannabinol (Δ9‑THC), which causes psychoactive effects, and cannabidiol (CBD), which does not. The authors describe possible medical uses (for pain, epilepsy, and neurodegenerative diseases) but say…
This laboratory study found that cannabidiol (CBD), a non‑psychoactive compound from Cannabis sativa, reduced fat production and inflammation in human sebaceous (oil) gland cells. The effects were seen in cultured human sebocytes and in human skin organ cultures, where CBD blocked the fat‑making (lipogenic) actions of several compounds. These results…
The study heated Cannabis sativa extracts at 80, 95, 110, 130, and 145 °C for up to 60 minutes and measured acidic and neutral cannabinoids with an advanced UHPSFC/PDA‑MS lab method. Concentrations changed in an exponential way, which fits a first‑order (or pseudo‑first‑order) reaction model. The team calculated rate constants…
In rats and mice that had brain lesions used to model Parkinson's disease, the plant compound Δ9-THCV reduced movement problems after a single dose and, with repeated dosing, reduced loss of dopamine-producing neurons in the brain region called the substantia nigra. Some effects seem linked to antioxidant actions and, in…
Researchers isolated a new natural cannabis compound called Δ9-tetrahydrocannabiphorol (Δ9-THCP) and its CBD counterpart (CBDP). In lab tests, Δ9-THCP bound very strongly to the human CB1 receptor (Ki = 1.2 nM) and caused THC-like effects in mice (less movement, pain relief, catalepsy, and lower body temperature). The authors say Δ9-THCP…
This systematic review looked at human studies of cannabidiol (CBD) for anxiety up to June 2019. Eight studies were included (6 small randomized controlled trials, 1 case series, and 1 case report). The studies tested CBD for anxiety in healthy volunteers, generalized anxiety disorder, social anxiety disorder, and PTSD-related anxiety.…
This review looks at research on how cannabis and its active chemicals relate to psychosis. It says there are three patterns: short psychotic symptoms during intoxication, short psychosis that can last beyond intoxication (often resolving within a month in case reports), and persistent psychosis that is not clearly tied to…
There is a large body of research but no clear answer about cannabis safety and benefits. More than 60 systematic reviews exist, yet findings are mixed because studies use different methods and cannabis products vary a lot. Research shows short- and long-term effects on the heart, lungs, immune system, sleep,…
