Tobacco - World Health Organization (WHO)
网页2023年7月31日 · Tobacco kills more than 8 million people each year, including an estimated 1.3 million non-smokers who are exposed to second-hand smoke (4). Around 80% of the world's 1.3 billion tobacco users live in low- and middle-income countries. In 2020, 22.3% of the world’s population used tobacco: 36.7% of men and 7.8% of women.
What is thirdhand smoke, and why is it a concern? - Mayo Clinic
网页2024年7月4日 · Thirdhand smoke is made up of the pollutants that settle indoors when tobacco is smoked. The chemicals in thirdhand smoke include nicotine as well as cancer-causing substances such as formaldehyde, naphthalene and others. Thirdhand smoke builds up on surfaces over time. It can become embedded in most soft surfaces such as …
Nicotine dependence - Symptoms and causes - Mayo Clinic
网页2022年4月19日 · Nicotine dependence occurs when you need nicotine and can't stop using it. Nicotine is the chemical in tobacco that makes it hard to quit. Nicotine produces pleasing effects in your brain, but these effects are temporary. So you reach for another cigarette. The more you smoke, the more nicotine you need to feel good.
Tobacco in China - World Health Organization (WHO)
网页2021年5月26日 · More than half of adult men are current tobacco smokers. About one in every three cigarettes smoked in the world is smoked in China. In addition, over 700 million non-smokers in China, including about 180 million children, are exposed to second-hand smoke (SHS) at least once a day in a typical week. Exposure to SHS causes 100,000 …
COPD - Symptoms and causes - Mayo Clinic
网页2024年8月30日 · This limited airflow is known as obstruction. Symptoms include trouble breathing, a daily cough that brings up mucus and a tight, whistling sound in the lungs called wheezing. COPD is most often caused by long-term exposure to irritating smoke, fumes, dust or chemicals. The most common cause is cigarette smoke.
Cigar smoking: Safer than cigarette smoking? - Mayo Clinic
网页2024年7月6日 · Cigar smoke contains more tar than does cigarette smoke. And smoking cigars might put you in contact with higher levels of other toxic substances, such as carbon monoxide, than smoking cigarettes does. For people who smoke cigars and inhale, risks linked with cigar smoking are like those of cigarette smoking.
Phantosmia: What causes olfactory hallucinations? - Mayo Clinic
网页2024年6月5日 · Phantosmia may be caused by a head injury or upper respiratory infection. It also can be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medicines and Parkinson's disease. Phantosmia also can result from a COVID-19 infection. Talk to your healthcare professional if you have symptoms of …
Quitting smoking: 10 ways to resist tobacco cravings
网页2022年5月28日 · Try going to a public smoke-free zone. These simple tricks may be enough to move you past your tobacco craving. 4. Chew on it. Give your mouth something to do to resist a tobacco craving. Chew on sugarless gum or hard candy. Or munch on raw carrots, nuts or sunflower seeds — something crunchy and tasty. 5.
Tobacco - World Health Organization (WHO)
网页2024年8月20日 · Tobacco. Nicotine contained in tobacco is highly addictive and tobacco use is a major risk factor for cardiovascular and respiratory diseases, over 20 different types or subtypes of cancer, and many other debilitating health conditions. Every year, more than 8 million people die from tobacco use. Most tobacco-related deaths occur in low- and ...
Hookah smoking: Is it safer than cigarette smoking?
网页2022年12月6日 · Hookah smoking is not safer than cigarette smoking. A hookah is a water pipe. The main parts of it include a smoke chamber, a water bowl, a pipe and a hose. Some other names for a hookah are a narghile, shisha, maassel and goza. The tobacco that's used in a hookah is often flavored. When someone uses a hookah, the tobacco is heated with …