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essay is about errors in the user interface and how is can cause disasterous effects. you speak about in terms of the heart marijuana is known to arrive at a fast rate, in fact, researchers say your heart beat can accelerate up to half of what it should be and this is a common effects that can be caused by this drug. long before i began this project, i had steadily reviewed the scientific literature on medical marijuana from the united states and thought it was fairly unimpressive. prefrontal cortex morphometry in abstinent adolescent marijuana users: subtle gender effects. reading these papers five years ago, it was hard to make a case for medicinal marijuana. it is perhaps no surprise then that 76% of physicians recently surveyed said they would approve the use of marijuana to help ease a woman's pain from breast cancer. deficient social and play behavior in juvenile and adult rats after neonatal cortical lesion: effects of chronic pubertal cannabinoid treatment. the literature not only suggests neurocognitive disadvantages to using marijuana in the domains of attention and memory that persist beyond abstinence, but suggest possible macrostructural brain alterations (e. but, an even more concerning issue to marijuana users would be the aggravation that can be experienced to the lungs and airways. in 2010, an investigation comprising chronic marijuana users and matched controls (approximately 19 years old), suggest increased activity in the prefrontal cortex in response to a task requiring executive aspects of attention [62]. this full essay on This is a essay about the harmful effects of marijuana and how they are ruining society today. essay is about the history of rock and roll and how it changed society. this suggests differential relationships between marijuana, alcohol, and cognitive outcomes in our sample.

Effects of marijuana | Law Teacher

researchers have and still are doing all they can to learn the ways thc (thc-which causes the mind-altering effects of marijuana intoxication- national institute on drug abuse-1) works once it is consumed and has entered the body. to better understand microstructural differences in tissue integrity among adolescent marijuana users as compared to binge drinkers, we looked at white matter differences between adolescent binge drinkers compared to binge drinkers with histories of heavy marijuana use (ages 16–19). for the most part, we have decided that it’s safe, as reflected in the decline of american high school seniors who perceive great risk in regular marijuana use from 58 percent in 2005 to 31. but the majority were research into the harm of marijuana, such as "bad trip due to anticholinergic effect of cannabis," or "cannabis induced pancreatitits" and "marijuana use and risk of lung cancer. long-term effects of frequent cannabis use on working memory and attention: an fmri study. one of the earliest studies on the effects of marijuana on adolescent neurocognitive development evaluated verbal and nonverbal memory performance in cannabis-dependent adolescents (ages 14 to 16) compared to matched controls [8]. to the 2011 monitoring the future study, marijuana remains the most commonly used illicit drug in adolescence in the united states, one of few increasing in prevalence. but to even begin to have an effective argument about this subject one must first know it detail what exactly marijuana is, how it effects a person once it is used, and the research to show and prove the details of whichever side of the fence one may stand on. effects of cannabis on neurocognitive functioning: recent advances, neurodevelopmental influences, and sex differences. our laboratory, we have found white matter alterations in our abstinent teen marijuana users (ages 16–19) compared to controls. although its true medical value is still under debated, researchers still believe that it has many beneficial effects for patients who choose to explore this option. differential effects of cannabinoid receptor agonist on social discrimination and contextual fear in amygdala and hippocampus. years scientists have and still are conducting studies about marijuana and the different effects that it has not only on the mind and body.

Dr. Sanjay Gupta: Why I changed my mind on weed -

while findings do not necessarily support a clear and consistent pattern of changes in cortical/subcortical volume and thickness measurements, as emphasized by lopez-larson and colleagues, we can conclude that marijuana may influence the trajectories of appreciable gray matter changes in several ways. further, some evidence suggests that many of the subtle cognitive effects are likely to resolve after longer-term abstinence. in 2007, harvey and colleagues found adolescent marijuana users (age 13–18; use greater than once per week) performed worse on tests of attention, learning, and memory; furthermore, poorer performance on executive functioning in this sample was related to more days of cannabis use in the past month [13]. family-based analysis of genetic variation underlying psychosis-inducing effects of cannabis: sibling analysis and proband follow-up. teens 12-17, the average age of first trying marijuana is 14 years old,how are these kids growing up in society. in a study investigating differences in cerebellum volumes, we found that adolescent marijuana users demonstrated larger inferior posterior vermis volume compared to controls; larger cerebellar volume was associated with poorer executive functioning [40]." they didn't have the science to support that claim, and i now know that when it comes to marijuana neither of those things are true. cousijn and colleauges recently found increased activation in heavy cannabis users (ages 18–25) in response to the iowa gambling task during win evaluations in brain areas such as the insula, caudate, and temporal gyrus, which was also positively related to weekly cannabis use; win-related increase in brain activity also predicted increased cannabis use six months later [63] lopez-larson and colleagues (2012) found differences in cortico-cerebellar activity in older adolescents with heavy marijuana use. we did not observe group differences in neurovascular functioning after four weeks of abstinence, suggesting marijuana may influence cerebral blood flow acutely with a possible return to baseline with prolonged abstinence [71]. resonance spectroscopy very few studies have looked at neurochemical brain changes related to marijuana use in adolescence. surely, they must have quality reasoning as to why marijuana is in the category of the most dangerous drugs that have "no accepted medicinal use and a high potential for abuse. in contrast, teichner and colleagues (2000) found no relationship between marijuana use severity and cognitive performance among cognitively impaired and unimpaired adolescents referred for drug treatment [9]. last year in the united states, nearly69 million people over the age of 12 have tried marijuana at least once.

This is a essay about the harmful effects of marijuana and how they

spatial working memory performance and fmri activation interaction in abstinent adolescent marijuana users. however marijuana smoke does contain a chemical that is known to cause cancer, an author by the name of jim parker researched this chemical (marijuana: health effects article 2010 #126) and found its name to be polycyclic aromatic hydrocarbons. effects of frequent marijuana use on brain tissue volume and composition. abstinent adolescent marijuana users show altered fmri response during spatial working memory. differential effects of delta9-thc on learning in adolescent and adult rats. while between group differences persisted between marijuana users and controls, surprisingly, teens engaging in binge drinking only looked significantly worse on indices of white matter integrity (i. in evaluating response patterns to a spatial working memory task, adolescent marijuana users exhibited increased activation in the right parietal lobe along with diminished activation in the right dorsolateral prefrontal cortex to achieve good task performance, which was not observed in controls [57, 58]. keep in mind that up until 1943, marijuana was part of the united states drug pharmacopeia. in response to a third task assessing verbal encoding, marijuana users demonstrated increased encoding-related activation in anterior brain regions as compared to decreased activation in posterior regions, despite no differences in task performance [20]; findings may suggest increased recruitment of neural resources in brain areas subserving task-related processing in marijuana using teens. general, research points to poorer white matter integrity in adolescent marijuana users compared to non-substance using controls. the physical symptoms of marijuana addiction are nothing like those of the other drugs i've mentioned. essay is about thte link between type two diabetes and obesity. there have been considerable additions to the literature over the last decade, yet the degree of impairment related to marijuana use in adolescence remains inconclusive.

What Science Says About Marijuana - The New York Times

brain glucose metabolism in chronic marijuana users at baseline and during marijuana intoxication. jacobsen and colleagues (2004) were the first to pilot an auditory working memory (n-back) fmri study comparing marijuana users (with tobacco use) compared to a tobacco using group and control group. there are both long-termand immediate effects such as cancer(a huge killer in the world), increased heartrate, and the way young people grow up. researchers have not yet found a solid enough connection that would link marijuana smoke to lung cancer (at least not to my research abilities). This is a essay about the harmful effects of marijuana and how they are ruining society today. residual effects of chronic cannabis treatment on behavior in mature rats. longitudinal study of cognition among adolescent marijuana users over three weeks of abstinence. imagingfmri imaging changes in cognitive performance after acute and longer-term cannabis use are fairly well documented, even if residual effects are suspected to largely resolve. william hearst knew hemp was on verge of taking over the paper industry and to save his timber investment, he knew he had to stop marijuana. are still a lot of major factors to include when speaking on a subject as serious as marijuana or any drug for that matter. if a person drinksalcohol, along with using marijuana, the risk of an accident greatly increases. in another study by the same authors, nicotine withdrawal elicited increased activation across brain regions in the marijuana group, including parietal cortex, superior temporal gyrus, posterior cingulate gyrus, and the right hippocampus. neurochemical alterations in adolescent chronic marijuana smokers: a proton mrs study.

Effects of Cannabis on the Adolescent Brain

it includes the use of frontloading in presidential primaries and its effects and how the media's bias effects the campaign. marijuana is the second most widely used intoxicant in adolescence, and teens who engage in heavy marijuana use often show disadvantages in neurocognitive performance, macrostructural and microstructural brain development, and alterations in brain functioning. i have seen more patients like charlotte first hand, spent time with them and come to the realization that it is irresponsible not to provide the best care we can as a medical community, care that could involve marijuana. have been limited studies evaluating cortical thickness exclusively, however, lopez-larson (2011) evaluated 18 adolescents (ages 16–19) with histories of heavy marijuana use (at least 100 marijuana use episodes in the past year) compared to non-using controls. non-acute (residual) neurocognitive effects of cannabis use: a meta-analytic study. white matter integrity in adolescents with histories of marijuana use and binge drinking. comparisons between blood oxygen dependent signal (bold) in adolescent marijuana users and controls in response to cognitive tasks have revealed subtle differences in brain activation patters in marijuana users.., glutamate and n-acetyl aspartate) in the anterior cingulate, suggesting poorer underlying neuronal health in adolescent marijuana users [73], while the exact mechanisms by which cannabis would affect neuronal health is unclear, it is possible that modulation of neurotransmitters such as glutamate and gaba have adverse consequences on cellular development and neuron integrity; changes in neuronal health is one suggested mechanism which may underlie neuroimaging and neurocognitive findings discussed above. 2010, adolescent cannabis abusers (ages 16–19) were found to have decreased right medial orbital prefrontal cortex volume compared to non-using counterparts; volume was also found to be positively correlated with age of initiation of marijuana use in the sample (i. our first prospective investigation found that cumulative marijuana use over the course of eight years (teens followed from ages 13–30) was related to poorer performance on measures of attentional functioning [14]. functional mri of inhibitory processing in abstinent adolescent marijuana users. young, developing brains are likely more susceptible to harm from marijuana than adult brains. the same effect was not found in the tobacco-only control group suggesting marijuana use may lead to developmental changes masked by nicotine use [54, 55]we have conducted several bold fmri studies evaluating differences in activation patters between our sample of abstinent marijuana users and matched controls.

The dangers to students of regular marijuana use (essay)

so what if they can make people unhappy or violent, the muscular results of taking steroids are well worth the side effects. approximately 25% of adolescents (8th, 10th, and 12th grade) report being drunk in the past month and close to the same (23%) report using marijuana in the past month [1]. this is not an example of the work written by our professional essay writers. scientists can get research marijuana from a special farm in mississippi, which is astonishingly located in the middle of the ole miss campus, but it is challenging. neural correlates of verbal learning in adolescent alcohol and marijuana users. medical marijuana is not new, and the medical community has been writing about it for a long time. brain morphological changes and early marijuana use: a magnetic resonance and positron emission tomography study. findings also included higher cerebral blood flow in males reporting early initiation of marijuana use [44]. but young girls don't see the effects they only see the beauty and perfection in one simple picture. the influence of recency of use on fmri response during spatial working memory in adolescent marijuana users. a pattern of subtle yet potentially detrimental effects in cognitive domains related to attention, learning, and memory are most often described. someone uses marijuana, typically it is smoked like a cigarette. in a recent investigation, we found that more self-reported alcohol withdrawal symptoms predicted poorer performance on learning and memory in a sample of non-marijuana using teens with histories of episodic alcohol use, despite no relationship in our marijuana users with similar and/or heavier self-reported history of alcohol use [17].

The Real Dangers of Marijuana | National Affairs

from smoking marijuana, it could contribute to earlydevelopment of head and neck cancer in some people. in regard to higher-order cognitive functioning, lane and colleagues (2007) found adolescents (ages 14–18) with histories of heavy marijuana use performed worse on perseverative responding and flexible thinking compared to controls with limited histories of use. people think of marijuana, they generally think of it as an illegal drug, the good or bad in it, and often debate about the effects that this drug has on the body and the brain.., event-related potential response) was larger among cannabis users, and response increased (along with craving) in the user group after handling marijuana paraphernalia; findings suggest attentional bias, increased arousal, and possible neural differences (either pre-existing or altered by ongoing substance use engagement) that may elucidate discrepancies among teen substance use engagement [67]."not because of sound science, but because of its absence, marijuana was classified as a schedule 1 substance. while a cancer study may first be evaluated by the national cancer institute, or a pain study may go through the national institute for neurological disorders, there is one more approval required for marijuana: nida, the national institute on drug abuse. looking forward, i am especially intrigued by studies like those in spain and israel looking at the anti-cancer effects of marijuana and its components. expanding legalization of recreational marijuana, regular cannabis use has the potential to adversely impact students’ personal happiness and productivity throughout college and for years to follow, says Jon Porter. depressive symptoms in adolescents: associations with white matter volume and marijuana use. prospective study looking at gray matter volume at 12 years of age, prior to initiation of marijuana, found that smaller orbitofrontal cortex volume predicted initiation of cannabis use by 16 years of age, suggesting pre-existing structural abnormalities may play a role in both behavioral differences that lead to cannabis use as well as continued differences in the course of development [42]. the tars from marijuana smoke produce tumors when used for along period of time. in 2006, delisi and colleagues published one of the earlier studies to explore the potential for deleterious effects of cannabis on developing white matter. large longitudinal research would also help clarify the degree to which pre-existing differences and/or chronic marijuana use during adolescence contributes to the development of psychiatric disorders and cognitive impairment in adulthood.

Against Legalizing Marijuana | Teen Essay on What Matters

and recommendationsmarijuana, second to alcohol, is the most widely used intoxicant. this same research group also found evidence of reduced motivation among marijuana users compared to controls [11, 12]. in a recent investigation by abush and colleagues (2012), chronic win treatment was found to result in both acute and longer term effects not only in spatial memory and object recognition, but interestingly, long term potentiation in areas such as nucleus accumbens pathways [84]. the animal work is particularly important to highlight, given the consistency in many adolescent neurocognitive and neuroimaging studies conducted with human subjects reporting regular use of marijuana, as the findings often point to the deleterious effects on brain functioning compared to non-using controls. pmcid: pmc3930618nihmsid: nihms553009effects of cannabis on the adolescent brainjoanna jacobus1,2 and susan f. when i visited this year, there was no marijuana being grown."marijuana also reduces logical thinking and calculation skills, and can impair a user's ability to perform complex tasks. citizens in 20 states and the district of columbia have now voted to approve marijuana for medical applications, and more states will be making that choice soon. studies of marijuana use often find subtle decreases in performance compared to controls in cognitive domains such as attention, memory, and processing speed; such effects have been discussed as transient in the literature given limited group differences after prolonged abstinence from marijuana [5, 6]. when marijuana became a schedule 1 substance, there was a request to fill a "void in our knowledge. marijuana is a major concern aboutyoung people and the effects it as on them. challenges of marijuana researchto do studies on marijuana in the united states today, you need two important things. interestingly, some preliminary evidence supports that marijuana-related toxicity on white matter integrity may be more modest compared to the impact adolescent alcohol use has on the developing brain, although more research in needed in this area.

article reviews neuroimaging, neurocognitive, and preclinical findings on the effects of cannabis on the adolescent brain. blind field is an essay by margaret iverson which attempts to explain feelings of nostalgia versus feelings of the uncanny, freud explained this as distorted repressed memories. such a marijuana-related effect on white matter and gray matter structures (e. studies ofmarijuana's mental effects show that the drug can impair or reduce short-termmemory, alter sense of time, and reduce the ability to do things which requireconcentration, swift reactions, and coordination, such as driving a car or operatingmachinery. the smoke frommarijuana contains similar cancer-causing compounds as tobacco, but sometimes inhigher concentrations. marijuana is said to be one of our nation's leading and commonly used drug.., increased/decreased in cortical thickness) in two ways, 1) premature development and/or alterations in neurodevelopmental trajectories or 2) tissue loss or remodeling associated with marijuana-related toxicity [43]. just like tobacco smoke, marijuana smoke is harmful to thelungs because users often inhale the filtered smoke deeply and hold it in their lungsas long as possible. since thc is the major chemical in marijuana, it causes the most concern when it comes to the long-term and possibly even lasting effects that can occur from using this drug. as much as i searched, i could not find a documented case of death from marijuana overdose. perfusion the neurovascular effect of marijuana use in adolescence has not been studied extensively. as gonzalez and swanson point out in a recent commentary, annual prevalence rates of high school seniors have increased over the last decade (22% to 36%), while perceived risk of use has decreased from 80% of seniors reporting regular marijuana use as a “great risk” in 1992 to only 45% reporting marijuana use as risky in 2012 [1, 87]. is clear evidence that in some people marijuana use can lead to withdrawal symptoms, including insomnia, anxiety and nausea.

performance of heavy marijuana-smoking adolescents on a laboratory measure of motivation. marijuana use in adolescence could have implications for academic functioning, as well as social and occupational functioning extending into later life. much in the same way i wouldn't let my own children drink alcohol, i wouldn't permit marijuana until they are adults. young people start using marijuana it effects their interest in school work,and interferes with their learning by impairing thinking, reading comprehension,and verbal and mathematical skills. long-term effects, there is also immediate effects such as fasterheartbeat and pulse rate, bloodshot eyes, and dry mouth and throat. the scarything is, do they really know about the harmful effects? the papers described the use of medical marijuana to treat "neuralgia, convulsive disorders, emaciation," among other things. the compound may illicit premature tissue development, impose a marijuana-related effect on regressive changes (e. neuropsychological functioning in adolescent marijuana users: subtle deficits detectable after a month of abstinence. in the middle are the legitimate patients who depend on marijuana as a medicine, oftentimes as their only good option. another essay on this is a essay about the harmful effects of marijuana and how they are ruining society today. future work should focus on prospective investigations to help disentangle dose-dependent effects from pre-existing effects, and to better understand the interactive relationships with other commonly abused substances (e. marijuana users demonstrated increased cortical thickness in the bilateral lingual, right superior temporal, right parietal and left paracentral regions.

Harmful effects of marijuana essay

nevertheless, we have seen that differences in brain tissue integrity following heavier marijuana use does predict future risky behaviors such as increased marijuana use and aggressive and delinquent behaviors. the majority of findings suggest increased recruitment of neural resources (possibly reflecting compensation or changes in the efficiency of strategic neural processing) in brain areas subserving task-related processing in marijuana using teens. for example, ehrenreich and colleagues (1999) found that initiation of marijuana use prior to age 16 predicted impaired reaction time on a task of sustained attentional processing [28]. in brain development related to neurotoxic effects of regular marijuana use could significantly alter neurodevelopmental trajectories by not only changing neurochemical communication and genetic expression of neural development, but causing a toxic effect on brain tissue. essay is about the different types of volcanoes and how they are made. they also did not find any evidence marijuana led to morphine, heroin or cocaine addiction. in fact, sometimes marijuana is the only thing that works. information on the degree of attentional bias to marijuana cues may provide some indication of brain-based differences in cue-reactivity resulting in heavier use of marijuana among certain teenagers. is not yet determined whether marijuana leads to cancer, but most peoplewho smoke marijuana also smoke cigarettes and other drugs. the authors describe decreased activation in response to a bilateral finger-tapping task, and motor function activation was negatively correlated with total lifetime marijuana use [64]. contrary to what people believe about marijuana lingering in your system until the "high" you receive wears away, the thc stays in system and clings to the fat in your tissues, so its effects can last for days or even weeks in some cases, or to those who are described as heavy users. in order to better understand acute changes with abstinence, we examined neurocognitive performance over 3 weeks of monitored abstinence in marijuana users ages 15–19. harmful effects of marijuanamarijuana is one of the most harmful drugs, but yet it's one of the mostfrequently used drugs, does that sound right?

potency trends of delta-9-thc and other cannabinoids in confiscated marijuana from 1980-1997. you are the original writer of this essay and no longer wish to have the essay published on the lawteacher website then please click on the link below to request removal:Request the removal of this essay. altered prefrontal and insular cortical thickness in adolescent marijuana users. i mistakenly believed the drug enforcement agency listed marijuana as a schedule 1 substance because of sound scientific proof. in a recent study in our laboratory utilizing arterial spin labeling (asl), we found that heavy marijuana users (approximately 17 years old) assessed pre-and post 28 days of monitored abstinence showed reduced cbf in 4 cortical regions, including the left superior and middle temporal gyri, left insula, left and right medial frontal gyrus, and left supramarginal gyrus at baseline; users showed increased cbf in the right precuneus at baseline, as compared to controls."marijuana tilts the balance of chemicals in the brain that regulate mood, energy, appetite, and attention" (jim parker 20104). if they are adamant about trying marijuana, i will urge them to wait until they're in their mid-20s when their brains are fully developed. however, less is known on how brain functioning, or neural activation/signaling, may be changed by marijuana use and thereby reflected in declines in neuropsychological performance. we now know that while estimates vary, marijuana leads to dependence in around 9 to 10% of its adult users. expanding legalization of recreational marijuana, regular cannabis use has the potential to adversely impact students’ personal happiness and productivity throughout college and for years to follow, says jon porter./late onset of use studies evaluating early- and late-onset marijuana users have provided considerable insight into the effects of cannabis use on adolescent neurodevelopment. corpus callosum damage in heavy marijuana use: preliminary evidence from diffusion tensor tractography and tract-based spatial statistics. and both nicotine and alcohol are addicting, while few users of marijuana develop dependencies.

to be or not to be, marijuana is still considered and has been classified as a schedule 1 drug which means, "having a high potential for abuse and no medicinal value2". acute and non-acute effects of cannabis on brain functioning and neuropsychological performance. findings from our laboratory discussed in this review reflect a “longer-term,” (residual) effect as adolescents are required to undergo a 28-day abstinence period confirmed by urine toxicology, yet in order to really understand the effects of this compound on the brain and cognition more rigorous study design needs to account for longer-term follow-up periods following monitored abstinence. notably, former heavy users (reporting 3 months without regular use) had similar scores to non-marijuana using controls [10]. it is reported that," 94 million americans (40 percent) age 12 and older have tried marijuana at least once", this is according to the 2003 national survey on drug use and health (nsduh). learning and memory performances in adolescent users of alcohol and marijuana: interactive effects. essay is about hopper, and how his works are linked with psychology, particularly with the theories of freud. studies exploring the neurocognitive consequences and structural and functional neuroimaging changes related to marijuana use in adolescence will be discussed, along with recommendations for future work. short- and long-term cognitive effects of chronic cannabinoids administration in late-adolescence rats. in 2007, we found marijuana users to have substantially more activation than non-using peers in response to an inhibitory processing task, particularly in parietal and dorsolateral prefrontal cortices, suggesting additional neural resources required to maintain adequate executive control during response inhibition [56]. in a follow-up investigation using the same spatial working memory task, we evaluated teens with more recent abstinence (2–7 days abstinent) compared to prolonged abstinence (27–60) from marijuana, as well as matched controls. among their conclusions: they found marijuana did not lead to significant addiction in the medical sense of the word. according to wilson and colleagues (2000), individuals reporting marijuana use prior to age 17 demonstrated decreased whole brain and cortical gray matter in addition to increased percent white matter volume.
we did observe a subtle gender interaction, as female cannabis users had a slightly larger prefrontal cortex compared to non-using female controls; while this trend did not reach statistical significance, it may suggest that female marijuana users are more vulnerable to macrostructural alterations (given smaller prefrontal cortex volume was related to better executive functioning among users). differences in our studies generally persist despite controlling for alcohol use present in both controls and marijuana users; but to further understand differential contributions of marijuana and alcohol to neurocognitive functioning in our sample, we examined unique associations between alcohol use severity and cognitive functioning in both marijuana users as well as controls. it is also unclear what defines acute versus longer-term effects (1 week compared to 6 months, etc). in a subsequent cross-sectional study of adolescent marijuana users ages 16–18, we found that marijuana users demonstrated slower processing speed, poorer verbal learning and memory, and sequencing abilities [15]. studies also focus on various cannabinoids beside δ9-tetrahydrocannabinol (δ9-thc), the principal psychoactive component of marijuana; for example increasing attention is being given to cannabidiol, a nonpsychoactive cannabinoid that may have promising therapeutic effects independent of thc [74]. effects of alcohol and combined marijuana and alcohol use during adolescence on hippocampal volume and asymmetry. evidence for involvement of the insula in the psychotropic effects of thc in humans: a double-blind, randomized pharmacological mri study.'s present time--this is a satirical essay about the use of steroids in sports today. furthermore, we need to better understand the interactive relationships between alcohol and marijuana use as these substance are commonly used together and may result in differing structural, functional, and cognitive brain changes when used alone or in combination. sanjay gupta says we have been "systematically misled" on marijuanadea lists marijuana as a schedule 1 substance with "high potential for abuse"most recent research on marijuana has been on its negative effects, gupta saysstudies on marijuana require approval from national institute on drug abuseover the last year, i have been working on a new documentary called "weed. the amount of adult studies looking at the acute and non-acute effects of marijuana is large and investigations typically see changes in higher-order cognitive functioning and neural processes that are more pronounced immediately following thc administration and may persist after prolonged cessation of use; however current evidence suggests persisting differences are most likely subtle in nature [5, 6, 88–90].., decreased fa) in several areas (cortical and subcortical projection fibers) as compared to marijuana users, highlighting the need for further research to disentangle the effects of marijuana and alcohol on the developing brain [18]. medical marijuana has calmed her brain, limiting her seizures to 2 or 3 per month.

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