Smokers are exposed daily to more than 7,000 chemicals, including about 60 that are recognized as carcinogens by the IARC (International Agency for Research on Cancer). Nicotine rapidly creates a neurochemical dependence by activating the brain’s nicotinic acetylcholine receptors. Carbon monoxide (CO) binds to hemoglobin in place of oxygen, reducing the blood’s oxygen-carrying capacity and exacerbating tissue hypoxia. Cardiovascularly, tobacco promotes atherosclerosis, vasoconstriction, and thrombosis, significantly increasing the risk of heart attack and stroke. Respiratory-wise, the progressive deterioration of bronchial cilia increases the risk of recurrent chronic bronchitis and emphysema.
Smoking is the leading modifiable cardiovascular risk factor. Nicotine increases heart rate, blood pressure, and myocardial oxygen demand, while carbon monoxide reduces oxygen delivery. This dual effect creates a particularly dangerous imbalance between oxygen demand and supply. Smoking accelerates the buildup of atherosclerotic plaques in the coronary arteries and promotes platelet aggregation, increasing the risk of heart attack by 2 to 4 times among smokers, according to data from the HAS. For the cardiovascular system, quitting smoking remains the intervention with the most well-documented effectiveness: cardiac risk decreases as early as the first year of abstinence.
Smoking cessation treatments covered by health insurance include:
The combination of nicotine replacement therapy and psychological support yields the best results. Tabac Info Service (39 89) and the “Mois Sans Tabac” program are effective complementary resources.
Quitting smoking initiates a gradual recovery of the immune system, which has been weakened by years of smoking. Several nutrients support this process:
Nicotine is a central nervous system stimulant that disrupts sleep architecture: it shortens deep sleep phases and increases nighttime awakenings, particularly those related to cravings. Paradoxically, many smokers perceive cigarettes as anxiety-relievers, even though they raise baseline levels of cortisol and adrenaline. Withdrawal can temporarily worsen anxiety and irritability (withdrawal syndrome), but these symptoms subside within 2 to 4 weeks. Sleep quality improves significantly after 1 to 3 months of quitting.
The body spontaneously initiates a detoxification process as soon as you quit smoking: the bronchial cilia regenerate, lung capacity improves, and circulation is restored. Herbal drainage treatments (desmodium, artichoke, milk thistle) can support liver function, which is under strain from the elimination of tobacco metabolites. Drinking plenty of fluids (1.5 to 2 L/day) facilitates the elimination of stored substances through the kidneys. Regular physical activity improves lung ventilation and helps offset the weight gain frequently observed at the beginning of the quitting process.
