16th October 2019

cancerresearchuk
15

How many cigarettes does it take to cause cancer?

Each cigarette can damage DNA in many lung cells, but it is the build up of damage in the same cell that can lead to cancer. However research has shown that for every 15 cigarettes smoked there is a DNA change which could cause a cell to become cancerous.

Just so, is it OK to smoke cigarettes occasionally?

Smoking as little as one to four cigarettes each day triples your risk of heart disease and lung cancer. And although social smokers only smoke occasionally, they may indulge in binge smoking on those occasions. Because nicotine is so addictive, social smokers can quickly become more regular, addicted smokers.

How many cigarettes a day is considered a heavy smoker?

In general, a light smoker is someone who smokes less than 10 cigarettes per day. Someone who smokes a pack a day or more is a heavy smoker. An average smoker falls in between. Sometimes a doctor will use the term pack year to describe how long and how much a person has smoked.
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