The composition "Outlook on Health" is about 350 words.

Hello, everyone, you must not have noticed that there are many unhealthy phenomena lurking around you, such as smoking, drinking and gambling ... Say it, just say smoking. People who smoke for 20 years are twice as likely to develop lung cancer as non-smokers. Cigarettes contain nicotine, which is a highly toxic substance. Experiments show that a cigarette contains 5 to 15 mg of nicotine, which is enough to poison a mouse. Nicotine contained in 20 cigarettes can poison a cow. Many people smoke a pack of cigarettes a day. Why not be poisoned? This is because not much nicotine enters the human body every time you smoke! But if you smoke all the year round, the human body will cause chronic poisoning. Teenagers are in the developmental stage, their tissues and organs are very delicate, and they absorb harmful substances faster than adults, which is more harmful. About 2 million people in the world die from smoking every year. The Royal Medical Association reported that "every cigarette you smoke will shorten your life span by 5 minutes and 30 seconds." Thus, smoke is a knife that kills people without seeing blood! Smoking causes disease, the most obvious is lung cancer! So smoking is dangerous. And the danger of alcohol. Drinking too much will anesthetize your nerves and sometimes make you lose a lot of reason. Many people who often drink alcohol have experienced that the memory of people who drink alcohol will be seriously damaged, which will affect the normal progress of many things. As far as the reporter knows, a grass-roots cadre in a mountainous area of our province almost became a vegetable because of excessive drinking, and he has not recovered after three operations. It is reported that years ago, a foreign businessman invested confidently in a city, and the municipal government hosted a banquet. On the first day, officials took turns to persuade wine, but foreign businessmen barely managed it; The next day, foreign businessmen were too drunk to cope; On the third day, foreign businessmen fled in succession, and their investment was "ruined". There is a saying that "a car accident is fiercer than a tiger", among which there is a lesson of blood from drunk driving. A greedy glass of wine brings a cold body, mourners and sad cries. What awaits you will be legal sanctions. Wine can not only confuse people, but also destroy them invisibly! Shakespeare said, "If we want to live a long and healthy life, we should avoid hard liquor." And gambling. Some gamblers cheat in some places, but once you take part in gambling, you will be penniless. Even if your next gambling tempts your mind, it is your normal psychological obstacle, and you just want to win the next bet. Gamblers should be careful to lose money. These appear around us. Young people and middle-aged people must be careful of the traps around them.