Background: Heavy smokers (those who smoke greater than or equal to 25 or more cigarettes a day) are a subgroup who place themselves and others at risk for harmful health consequences and also are those least likely to achieve cessation.

The lung loses tiny blood vessels and can’t grow new ones. So that’s permanent. [When it comes to cancer], we calculate that the risk for lung cancer probably returns to that of a nonsmoker somewhere between 10 and 15 years after smoking cessation.

The mutations that lead to lung cancer had been considered to be permanent, and to persist even after quitting. But the surprise findings, published in Nature, show the few cells that escape damage can repair the lungs. The effect has been seen even in patients who had smoked a pack a day for 40 years before giving up.

Smoker’s leg is the term for PAD that affects the lower limbs, causing leg pain and cramping. The condition results from the buildup of plaque in the arteries and, in rare cases, the development of blood clots.

Once you’ve quit smoking, your cilia can take anywhere from 1 to 9 months to heal. However, the tar that caused the damage in the first place can take even longer to leave your lungs. This means it would take 6 years for the body to remove tar from the lungs of a person who has smoked for 36 years.

A study in the January 24 issue of The BMJ found that smoking even one cigarette a day carries significant health consequences, namely a higher risk of heart attack and stroke.

Your lungs are a remarkable organ system that, in some instances, have the ability to repair themselves over time. After quitting smoking, your lungs begin to slowly heal and regenerate. The speed at which they heal all depends on how long you smoked and how much damage is present.

This study shows that, after smoking a cigarette, the lung continues to release particulate matter from tobacco smoke in the ambient for up to 90 s with each subsequent exhaled breath. This “residual tobacco smoke” is a hidden source of environmental tobacco smoke and can contribute substantially to indoor pollution.

Depending on how long you’ve smoked and how many cigarettes you have a day, symptoms of nicotine withdrawal can last anywhere from several days to several weeks. Nicotine withdrawal involves physical, mental, and emotional symptoms. The first week, especially days 3 through 5, is always the worst.

A condition often caused by exposure to toxic chemicals or long-term exposure to tobacco smoke, bullous lung disease (also known as bullae) is a condition where air trapped in the lungs causes obstruction to breathing and eventual destruction of the lungs.

It may take time for the lungs to fully heal, and some people may have scarring and shortness of breath for the rest of their lives. It’s important to avoid triggering factors such as cigarette smoke. Persistent hoarseness may occur in people who have sustained burn or smoke inhalation injuries or both.

Ways to clear the lungs

1. Steam therapy. Steam therapy, or steam inhalation, involves inhaling water vapor to open the airways and help the lungs drain mucus.
2. Controlled coughing.
3. Drain mucus from the lungs.
4. Exercise.
5. Green tea.
6. Anti-inflammatory foods.
7. Chest percussion.

Temperatures reach 900°C during a puff and fall to about 400°C between puffs (Guerin 1987).

The study shows that smokers die relatively young. An estimated 23 percent of consistent heavy smokers never reach the age of 65. This is 11 percent among light smokers and 7 percent among non-smokers. Life expectancy decreases by 13 years on average for heavy smokers compared to people who have never smoked.

Environmental tobacco smoke is a contributor of air pollution particles. These fine particles are a risk factor for chronic lung disease which can be debilitating and sometimes fatal. They can lead to conditions such as asthma, bronchitis, and emphysema, and are also a risk for lung cancer, write the researchers.

Cigarettes burn at around 700C (1,292F) and the ignition temperature of petrol is 246C.

Fire-safe cigarettes are less likely to cause a fire.

The common name for the remains of a cigarette after smoking is a cigarette butt. The butt is typically about 30% of the cigarette’s original length. It consists of a tissue tube which holds a filter and some remains of tobacco mixed with ash. It is also called a fag-end or dog-end.

Petrol is a dangerous substance; it is a highly flammable liquid and can give off vapour which can easily be set on fire and when not handled safely has the potential to cause a serious fire and/or explosion.

A smoker lights a cigarette, starting a high-temperature reaction known as burning, or combustion. The consumer draws air through the lit cigarette for a certain number of puffs, until the tobacco leaves and paper are completely burned away, leaving only the ash.

When a cigarette is lit, the combination of tobacco (fuel) and oxygen in the air generates a self-sustaining combustion process that consumes the tobacco. The combustion of tobacco results in the formation of smoke (that contains a range of chemical constituents), heat, and ash.

Within 1 to 9 months of quitting: Coughing and shortness of breath decrease. Your lungs and airways are more able to handle mucus, clean the lungs, and reduce the risk of infection. Within 1 year of quitting: Your risk of coronary heart disease is half that of someone still using tobacco.

The symptoms of nicotine withdrawal can begin within 30 minutes of your last use of tobacco and will depend on your level of addiction. Factors such as how long you used tobacco and how much tobacco you use on a daily basis will impact the severity of your symptoms.

mainstream smoke

Tobacco. Smoking during pregnancy increases the risk of health problems for developing babies, including preterm birth, low birth weight, and birth defects of the mouth and lip. Smoking during and after pregnancy also increases the risk of sudden infant death syndrome (SIDS).