cannabis-safety
Cannabis safety research examines the chemical composition, contaminant levels, and potential toxicity of cannabis plants and their derived products, including cannabinoids, terpenes, pesticides, and heavy metals. This field matters for plant science because it informs cultivation practices, breeding for reduced harmful compound content, and quality control standards, ensuring that plant-based products meet safety thresholds for consumer use. Understanding these safety profiles also supports regulatory frameworks and guides research into the plant's therapeutic versus harmful properties.
open_in_new WikipediaPubMed · 2026-06-29
A clinical study of 287 advanced cancer patients found that medicinal cannabis, whether CBD alone or combined with THC, did not meaningfully raise liver enzyme levels over four weeks, even at doses up to 600 mg CBD per day.
No patients in the cannabis groups exceeded the liver enzyme thresholds of 3x upper limit of normal (or 5x for those with liver metastases) for ALT or AST.
CBD doses up to 600 mg/day showed no clinically meaningful liver enzyme elevation over 28 days.
CBD-only and THC/CBD combination products produced no significant differences in liver enzyme levels.
