They tend to only contain very small amounts of CBD, so it's not clear what effect they would have. Is medical cannabis safe?

Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.THC can also affect sensory perception. Colors may seem brighter, music more vivid, and emotions more profound. Meier MH, Caspi A, Ambler A, et al. Persistent cannabis users show neuropsychological decline from childhood to midlife. Proc Natl Acad Sci U S A. 2012;109(40):E2657-E2664. doi:10.1073/pnas.1206820109. Cone EJ, Bigelow GE, Herrmann ES, et al. Non-smoker exposure to secondhand cannabis smoke. I. Urine screening and confirmation results. J Anal Toxicol. 2015;39(1):1-12. doi:10.1093/jat/bku116. Phillips, J. A., et al. (2015). Marijuana in the workplace: Guidance for occupational health professionals and employers: Joint guidance statement of the American Association of Occupational Health Nurses and the American College of Occupational and Environmental Medicine. Claver, Hugo (12 September 2022). "Electric weeding with high frequency electricity gives better weed control with lower energy use". futurefarming.com.

Wang X, Derakhshandeh R, Liu J, et al. One Minute of Marijuana Secondhand Smoke Exposure Substantially Impairs Vascular Endothelial Function. J Am Heart Assoc. 2016;5(8). doi:10.1161/JAHA.116.003858. Rumalla K, Reddy AY, Mittal MK. Recreational marijuana use and acute ischemic stroke: A population-based analysis of hospitalized patients in the United States. J Neurol Sci. 2016 May 15;364:191-6.An overdose occurs when a person uses enough of the drug to produce life-threatening symptoms or death. There are no reports of teens or adults dying from marijuana alone. However, some people who use marijuana can feel some very uncomfortable side effects, especially when using marijuana products with high THC levels. People have reported symptoms such as anxiety and paranoia, and in rare cases, an extreme psychotic reaction (which can include delusions and hallucinations) that can lead them to seek treatment in an emergency room. Cannabis is a warm-season annual—it thrives in temperate climates, such as Northern California’s famed Emerald Triangle, and it grows and dies each year, having to get planted again the following year. Define the term weed". forages.oregonstate.edu. Oregon State University Forage Information System. June 2009. Testicular cancer: A 2018 review concluded that using cannabis more than 50 times in a lifetime may increase the risk of testicular cancer. Amaranth – ("pigweed") annual with copious long-lasting seeds, also a highly edible and resilient food source

Zwerling C, Ryan J, Orav EJ. The efficacy of preemployment drug screening for marijuana and cocaine in predicting employment outcome. JAMA. 1990;264(20):2639-2643. Because the plant was illegal for so long, a lot of grow info has been passed down by word of mouth. There are many myths and traditions about growing weed, so it can be hard to sort good, sound advice from hearsay. Also, because it was illegal, there’s ample information on indoor growing and how to get the most out of a small space by maximizing harvests and training plants. Compared to those who don't use marijuana, those who frequently use large amounts report the following: Marijuana also affects brain development. When people begin using marijuana as teenagers, the drug may impair thinking, memory, and learning functions and affect how the brain builds connections between the areas necessary for these functions. Researchers are still studying how long marijuana's effects last and whether some changes may be permanent.Bell C, Slim J, Flaten HK, Lindberg G, Arek W, Monte AA. Butane Hash Oil Burns Associated with Marijuana Liberalization in Colorado. J Med Toxicol Off J Am Coll Med Toxicol. 2015;11(4):422-425. doi:10.1007/s13181-015-0501-0. It would only be considered when other treatments were not suitable or had not helped. Epidyolex for children and adults with epilepsy These neurotransmitters affect brain areas that play a role in memory, thinking, concentration, movement, coordination, sensory and time perception, and pleasure. So far, most studies have focused on CBD and THC, but scientists are looking into the effects of other cannabinoids, too.