According to the CDC:
Diseases caused by smoking kill more than 480,000 people in the U.S. each year.
These diseases kill 6 million people worldwide each year.
Smoking causes almost 90% of deaths from lung cancer.
It also causes almost 90% of deaths from chronic obstructive pulmonary disease (COPD).
Despite health warnings, many people continue to smoke or start to smoke each year.
About 8% of high school students report that they smoked cigarettes in the past 30 days.
Risks of lung diseases from smoking include:
Chronic bronchitis. This is a type of COPD. This is a long-term (chronic) inflammation of the large airways (bronchi). It causes shortness of breath and coughing up mucus over weeks or months.
Emphysema. This is also a type of COPD. This condition affects the air sacs (alveoli) in the lungs. It causes shortness of breath, coughing, and extreme tiredness (fatigue). It can also cause sleep and heart problems, weight loss, and depression.
Lung cancer. This is an abnormal growth of cells. It can cause lumps, masses, or tumors to grow in the lungs. It may start in the lining of the bronchi. Or it may start in other areas of the lungs. Smoking is the leading cause of lung cancer. This includes secondhand smoke. Lung cancer often has no symptoms until it is advanced. Symptoms may include cough, chest pain, shortness of breath, and recurring lung infections.
Other types of cancer. Smoking increases the risk of cancer of the nose, sinuses, voice box, and throat. It also raises the risk of many other cancers. These include cancers of the gastrointestinal, urinary, and female reproductive systems.
If you have any symptoms of lung disease, see your healthcare provider right away.
Secondhand smoke is smoke that is breathed out by smokers. It is also smoke from a burning cigarette, cigar, or pipe. It causes more than 7,000 lung cancer deaths each year in people who don’t smoke. And it causes a total of 41,000 other deaths per year. It can also lead to lung conditions and heart disease. Symptoms linked to secondhand smoke may include:
Eye, nose, and throat irritation
Too much mucus in the airways
Chest discomfort or pain
Children and babies exposed to tobacco smoke are more likely to have ear infections, and asthma. They are also at a higher risk for sudden infant death syndrome (SIDS).
Many cigar smokers don't inhale. But their risk for oral, throat, and esophageal cancers is the same as for cigarette smokers.
Some cigar smokers do inhale. These smokers are more likely to have oral, esophageal, or laryngeal cancer than people who don’t smoke.
Secondhand smoke from cigars gives off carcinogens. These are chemicals that cause cancer. Cigar smoke has more of these chemicals than cigarette smoke does.
People who quit smoking can reverse some of the lung damage. Other benefits may include:
Lower risk for lung disease
Lower risk for heart disease
Lower risk for cancer
No more cigarette stains on fingers and teeth
No more smoke smell on clothing and hair
Better senses of smell and taste
Quitting smoking can be very hard. These tips can help you quit:
Think about why you want to quit. Make a list of the reasons.
Set a quit date.
Try to pick a time when you have as little stress as possible.
Ask for support and encouragement from family, friends, and coworkers.
If you don't already exercise, start to increase your physical activity to improve your health.
Try to get enough sleep each night and eat a healthy diet. Along with exercise, healthy sleeping and eating habits will help you cope with quitting.
Join a stop-smoking program or support group. There are programs like these in most communities. There are also programs you can access by phone and online:
Try the Smokefree.gov website.
Try your state's quitline. Call 800-QUIT-NOW (800-784-8669).
There are different kinds of medicines that can help you stop smoking. Talk with your healthcare provider to see if any of them are right for you.
Over-the-counter medicines include:
Nicotine patch. Nicotine is sent through the skin.
Nicotine gum. Gum gives your body nicotine quickly.
Nicotine lozenge. Lozenges are like hard candy.
Prescription medicines include:
Nicotine nasal spray. This sends nicotine quickly into your body.
Nicotine inhaler. Using an inhaler is like smoking cigarettes.
Bupropion. This is a type of antidepressant medicine. It can help to lessen cravings for nicotine.
Varenicline tartrate. It helps to lessen the discomfort of quitting. It also lessens the pleasure you get from smoking.