From the National Institute on Drug Abuse, comprehensive information about marijuana and its effects. ... This page has been accessed 9413109 times since 1/8/1999. ... NIH Publication No. 04-4037;

Marijuana increases heart rate by 20–100 percent shortly after smoking; this effect can last up to 3 hours.

Marijuana (grass, pot, weed) is the common name for a crude drug made from the plant Cannabis sativa. ... What are some of the immediate effects of smoking marijuana?; Some immediate physical effects

"To help protect and remind you of the hazards of cigarette : smoking, all cigarette vending ..snachines have been removed ''trom the premises.

Medscape Smoking Related Disorders CME courses ... Smoking Plus Beta-Carotene May Up Cancer Odds - WebMD, 9/20/05 - "high beta-carotene intake (from foods or supplements) was linked to low levels

Scientists have found that whether an individual has positive or negative sensations after smoking marijuana can be influenced by heredity. ... Health Hazards from Marijuana Use

Marijuana side effects, warnings and health hazards. General information about possible long and short term effects that may occur in individuals. ... Effects of Marijuana on the Brain ... In one study,

Scientists have found that whether an individual has positive or negative sensations after smoking marijuana can be influenced by heredity. ... health hazards

 And I thought smoking weed with meth addicts in a trailer court was weird, ... The tracks act as an insect lamp for the incredibly terrible drivers of Phoenix, are jaywalking hazards at major stations,

Weed Smokers Unite ... This change, he goes on, is "demonstrably related" to the data about the hazards of smoking that have emerged since the surgeon general's report on the subject in 1964.