Smoking is a disease (nicotine dependence) that is related to approximately 50 illnesses, including various types of cancer (lung, larynx, pharynx, esophagus, stomach, pancreas, liver, kidney, bladder, cervical, leukemia), respiratory diseases (pulmonary emphysema, chronic bronchitis, asthma, respiratory infections), and cardiovascular diseases (angina, acute myocardial infarction, hypertension, aneurysms, stroke, thrombosis). There are also other diseases related to smoking: digestive system ulcers; osteoporosis; cataracts; sexual impotence in men; infertility in women; early menopause and complications during pregnancy.
All tobacco derivatives, which can be used in the forms of inhalation (cigarettes, cigars, pipes, hookah, straw cigarettes), aspiration (snuff), and chewing (roll-your-own), are harmful to health. During the consumption of these products, about 4,720 toxic substances are introduced into the body, including nicotine (responsible for chemical dependence), carbon monoxide (the same poisonous gas that comes from car exhaust), and tar, which consists of approximately 60 carcinogenic substances, such as pesticides and radioactive elements.
It is already expected that a person will make more than one attempt before quitting for good. Studies show that, on average, a former smoker tries to quit smoking between three to four times before succeeding permanently. With each attempt, one learns about the greatest difficulties and how to control them without smoking. For example: you decide to quit smoking, and when faced with a stressful situation, you think about smoking a cigarette as a solution to calm down. Over time, you learn that, besides the cigarette not solving your problems, it is harming your health.
Source: www.blog.saude.gov.br