How does smoking affect your health?

How does smoking affect your health?
Health concerns usually top the list of reasons people give for quitting smoking. This is a
very real concern: smoking harms nearly every organ of the body.
Half of all smokers who keep smoking will end up dying from a smoking-related illness.
In the United States alone, smoking is responsible for nearly 1 in 5 deaths, and more than
16 million people suffer from smoking-related diseases.
Cancer

Nearly everyone knows that smoking can cause lung cancer, but few people realize it is
also linked to a higher risk for many other kinds of cancer too, including cancer of the
mouth, nose, sinuses, lip, voice box (larynx), throat (pharynx), esophagus, bladder, liver,
kidney, pancreas, ovary, cervix, stomach, colon, rectum, and acute myeloid leukemia.
Lung diseases
Smoking greatly increases your risk of getting long-term lung diseases like emphysema
and chronic bronchitis. These diseases make it harder to breathe, and are grouped
together under the name chronic obstructive pulmonary disease (COPD). COPD causes
chronic illness and disability, and gets worse over time – sometimes becoming fatal.
Emphysema and chronic bronchitis can be found in people as young as 40, but are
usually found later in life, when the symptoms become much worse. Long-term smokers
have the highest risk of developing severe COPD. Pneumonia and tuberculosis are also
included in the list of diseases caused or made worse by smoking.
Heart attacks, strokes, and blood vessel diseases
Smokers are twice as likely to die from heart attacks as non-smokers. Smoking is a major
risk factor for peripheral vascular disease, a narrowing of the blood vessels that carry
blood to the leg and arm muscles. Smoking also affects the walls of the vessels that carry
blood to the brain (carotid arteries), which can cause strokes. Smoking can cause
abdominal aortic aneurysm, in which the layered walls of the body’s main artery (the
aorta) weaken and separate, often causing sudden death. And men who smoke are more
likely to develop erectile dysfunction (impotence) because of blood vessel disease.
Blindness and other problems
Smoking increases the risk of macular degeneration, one of the most common causes of
blindness in older people. It promotes cataracts, which cloud the lens of the eye. It also
causes premature wrinkling of the skin, bad breath, gum disease, tooth loss, bad-smelling
clothes and hair, and yellow teeth and fingernails.
Special risks to women and babies
Women have some unique risks linked to smoking. Women over 35 who smoke and use
birth control pills have a higher risk of heart attack, stroke, and blood clots in the legs. A
woman who smokes is more likely to have an ectopic pregnancy (tubal pregnancy),
which can’t be saved and can threaten the mother’s life. Smokers are also more likely to
miscarry (lose the baby) or have a lower birth-weight baby. Low birth-weight babies are
more likely to die or have learning and physical problems. And mothers who smoke
during early pregnancy are more likely to have babies with cleft lip and cleft palate.
For more on how smoking can affect women and their babies, please see Women and
Smoking.
Years of life lost due to smoking
Based on data collected in the late 1990s, the US Centers for Disease Control and
Prevention (CDC) estimated that adult male smokers lost an average of 13.2 years of life
and female smokers lost 14.5 years of life because of smoking.
Each year, smoking causes early deaths of about 480,000 people in the United States.
And given the diseases that smoking can cause, it can steal your quality of life long
before you die. Smoking-related illness can limit your activities by making it harder to
breathe, get around, work, or play.