Cannabis can make some existing mental health symptoms worse and has been linked with the possible development of mental health issues. Gum disease: According to the American Dental Association, there may be a link between cannabis use and gum disease As this is a claim for professional negligence, any claimant would need to prove that the (1) surveyor owed a duty of care to identify the Knotweed; (2) this duty was breached; and (3) the claimant’s loss was caused by the surveyor’s breach of duty.

Smoked marijuana, regardless of how it is smoked, can harm lung tissues and cause scarring and damage to small blood vessels. 20,21 While more research on the health consequences of breathing secondhand marijuana smoke is needed, there is concern that it could cause harmful health effects, including among children. Mental Health Higher THC levels may also mean a greater risk for addiction if people are regularly exposing themselves to high doses. What are the other health effects of marijuana? The receptors that respond to these cannabinoids also react to THC and other cannabinoids. In this way, cannabinoids from an outside source can change and disrupt normal brain function. Mechanical weed control has been increasingly replaced by the use of herbicides. [58] The reliance on herbicides has resulted in the rapid evolution of herbicide resistance in weeds, making previously effective herbicide treatments useless for the control of weeds. [59] In particular, glyphosate, which was once considered a revolutionary breakthrough in weed control, was relied upon heavily when it was first introduced to agriculture, resulting in rapid emergence of resistance. [60] As of 2023, 58 weed species have developed resistance to glyphosate. [61]THC acts on specific brain cell receptors that ordinarily react to natural THC-like chemicals. These natural chemicals play a role in normal brain development and function. But nobody played a larger role in cementing the word in the national consciousness than Harry Anslinger, director of the Federal Bureau of Narcotics from 1930 to 1962. An outspoken critic of the drug, he set out in the 1930s to place a federal ban on cannabis, embarking on a series of public appearances across the country. 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.

Although these findings support the idea of marijuana as a "gateway drug," the majority of people who use marijuana don't go on to use other "harder" drugs. It's also important to note that other factors besides biological mechanisms, such as a person’s social environment, are also critical in a person’s risk for drug use and addiction. Read more about marijuana as a gateway drug in our Marijuana Research Report. Can a person overdose on marijuana? Volkow ND, Swanson JM, Evins AE, DeLisi LE, Meier MH, Gonzalez R, Bloomfield MA, Curran HV, Baler R. Effects of Cannabis Use on Human Behavior, Including Cognition, Motivation, and Psychosis: A Review. JAMA Psychiatry. 2016 Mar;73(3):292-7.

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National Academies of Sciences, Engineering, and Medicine. The Health Effects of Cannabis and Cannabinoids: Current State of Evidence and Recommendations for Research. Washington, DC: The National Academies Press; 2017. CBD can also affect how your liver works, so doctors would need to monitor you regularly. How do I get a prescription? Many people who use marijuana long term and are trying to quit report mild withdrawal symptoms that make quitting difficult. These include:

MacCallum, C. A., & Russo, E. B. (2018). Practical considerations in medical cannabis administration and dosing. While a psychotic reaction can occur following any method of use, emergency room responders have seen an increasing number of cases involving marijuana edibles. Some people (especially preteens and teens) who know very little about edibles don't realize that it takes longer for the body to feel marijuana’s effects when eaten rather than smoked. So they consume more of the edible, trying to get high faster or thinking they haven't taken enough. In addition, some babies and toddlers have been seriously ill after ingesting marijuana or marijuana edibles left around the house. Is marijuana addictive?This method has become more popular in recent years. Most people use a vapouriser which heats the cannabis, rather than burning it. Very little is known about the health impact of vaping cannabis. Ready-made vapes and vape juices, like nicotine ones but claiming to contain cannabis chemicals like CBD (legal) and THC (not legal), are also available but illegal vapes might contain synthetic cannabinoids instead. House (U S ) Office of the Law Revision (25 April 2008). United States Code, 2006, V. 3, Title 7, Sections 701-End. Government Printing Office. pp.1230–. ISBN 978-0-16-079998-3. Marijuana over activates parts of the brain that contain the highest number of these receptors. This causes the "high" that people feel. Other effects include:

Where a duty to identify Japanese Knotweed does exist, the surveyor will have been under a duty to carry out a “reasonable” investigation. What this means in practice will, of course, be a matter of contention. A surveyor would never be under a duty to excavate a property, but a reasonable investigation will be more involved where Japanese Knotweed is likely to be hidden (for example, during summer, when the weed’s rate-of-growth is significantly reduced). This very point was made in Ryb v Conway Chartered Surveyors [2019], where the court also held that the surveyor’s investigation was inadequate (and therefore a breach of his duty) because the claimant’s poor-sight meant he was particularly reliant on the surveyor for an accurate identification of Japanese Knotweed. The court’s reasoning would suggest that the scope of a surveyor’s duty to identify Japanese Knotweed may depend on the claimant’s particular situation. After the seedling stage, a weed plant enters the vegetative stage, which is generally the longest stage of its life. Here the plant will be a main stalk, branches, and fan leaves—no buds yet.The risk factors include an underlying vulnerability to mental health issues such as family history, heavy cannabis use from a young age over a long period of time or use of high potency cannabis. Long-term use and dependency