奇速英语

十八岁前大量吸食大麻致残率高达百分之三十！

Men who smoked marijuana heavily at age 18 are more likely to end up registered as disabled by the time they reach 60, researchers warned.

Marijuana is one of the most commonly used unlawful drugs in the world, with 77 million Europeans reporting having tried it in a recent study.

The researchers found that men who used marijuana more than 50 times before the age of 18 were 30 percent more likely to go on disability sometime between the ages of 40 and 59.

The research bases on a study with a group of Swedish soldiers. The group consisted of 98 percent of the male population and the study continued for 39 years. The researchers had the opportunity to expand on existing knowledge. They analyzed data from a large study that included almost 50,000 men born between 1949 and 1951 and enrolled into compulsory military service in 1969 and 1970.

When the men entered the army, they were asked about their drug, tobacco and alcohol use, as well as questions about their family and social backgrounds, school performance, behavior, psychological issues and general health.

The research team was specifically interested in the frequency of marijuana use at age 18, when the men were enrolled. The young men were grouped according to how often they had ever used marijuana at that point: never, 1‐10 times, 11‐50 times or more than 50 times. Next, the study team looked at data from the Swedish national social insurance agency, the education registry and labor market statistics（统计数据） to see how many were granted disability pensions through 2008.

About 9 percent of the teens reported having used marijuana when they entered the military, and 1.5 percent said they had used it more than 50 times.

Despite the study’s limitations, the findings highlight the need for further studies on marijuana and other illicit drug use in relation to possible health and social consequences.