The effect of waterpipe tobacco smoke exposure on learning and memory functions in the rat model
Another study showed that people who smoke cost their employers about $4,430 a year in lost productivity and absenteeism

Often, it can: Make your senses stronger (colors might seem brighter and sounds might seem louder) Twist your sense of time Decrease your motor skills (which can make driving more dangerous) Lower your impulse control Make it harder for you to focus, learn, and remember things (which may last 24 hours or longer) Marijuana side effects You could also have: A dry mouth Dizziness Upset stomach Increased hunger Sleepiness Hallucinations (see things that aren't there) Increased heart rate (which can last a few hours after you stop smoking) Marijuana Benefits It appears that weed may help with: Ongoing pain Stiff muscles or muscle spasms from multiple sclerosis Sleep problems for those with fibromyalgia, multiple sclerosis, and sleep apnea Anxiety Loss of appetite and weight loss in people with AIDS Nausea or throwing up from chemotherapy Seizures from epilepsy Dravet syndrome or Lennox-Gastaut syndrome Even so, more research needs to be done, especially on marijuana's long-term effects

Why The "100 Cigarettes" Claim Is Misleading Smoke Volume Does Not Equal Toxic Dose Inhaling more smoke does not automatically mean absorbing proportionally more toxins
Cigarette smoking extract causes hypermethylation and inactivation of WWOX gene in T-24 human bladder cancer cells
13, pages 1347-52 December 1983 The AMA tackles smoking (3 pages) Journal article by Alan Blum, MD, reviewing the actions of the AMA on smoking from 1953 to 1983 New York State Journal of Medicine , vol