A cigarette is a small cylinder of finely cut tobacco leaves rolled in thin paper for smoking. The cigarette is ignited at one end and allowed to smoulder; its smoke is inhaled from the other end, which is held in or to the mouth; in some cases a cigarette holder may be used as well. Most modern manufactured cigarettes (also called "ready rolls"[1]) are filtered and include reconstituted tobacco and other additives.[2]
The term cigarette, as commonly used, refers to a tobacco cigarette but can apply to similar devices containing other herbs, such as cloves or cannabis. A cigarette is distinguished from a cigar by its smaller size, use of processed leaf, and paper wrapping, which is normally white, though other colors are also available. Cigars are typically composed entirely of whole-leaf tobacco.
Rates of cigarette smoking vary widely throughout the world, and have changed considerably over the course of history since cigarettes were first widely used in the mid-20th century. While rates of smoking have over time leveled off or declined in the developed world, they continue to rise in developing nations.[3][4]
Cigarettes carry serious health risks, which are more prevalent than in other tobacco products. Nicotine, the primary psychoactive chemical in tobacco and therefore cigarettes, is addictive.[5] About half of cigarette smokers die of tobacco-related disease[6] and lose on average 14 years of life.[5] Cigarette use by pregnant women has also been shown to cause birth defects, including low birth weight, fetal abnormalities, and premature birth.[7] Second-hand smoke from cigarettes has been shown to be injurious to bystanders,[8][9][10][11] which has led to legislation that has prohibited smoking in many workplaces and public areas. Cigarettes produce an aerosol containing over 4,000 chemical compounds, including nicotine, carbon monoxide, acrolein, and oxidant substances.[12] Over 50 of these are carcinogens.[13] Cigarettes are a frequent source of fires leading to loss of lives in private homes, which prompted the European Union and the United States to ban cigarettes that are not fire standard compliant by 2011
A cigarette is a small cylinder of finely cut tobacco leaves rolled in thin paper for smoking. The cigarette is ignited at one end and allowed to smoulder; its smoke is inhaled from the other end, which is held in or to the mouth; in some cases a cigarette holder may be used as well. Most modern manufactured cigarettes (also called "ready rolls"[1]) are filtered and include reconstituted tobacco and other additives.[2]The term cigarette, as commonly used, refers to a tobacco cigarette but can apply to similar devices containing other herbs, such as cloves or cannabis. A cigarette is distinguished from a cigar by its smaller size, use of processed leaf, and paper wrapping, which is normally white, though other colors are also available. Cigars are typically composed entirely of whole-leaf tobacco.Rates of cigarette smoking vary widely throughout the world, and have changed considerably over the course of history since cigarettes were first widely used in the mid-20th century. While rates of smoking have over time leveled off or declined in the developed world, they continue to rise in developing nations.[3][4]บุหรี่มีความเสี่ยงสุขภาพร้ายแรง ซึ่งเป็นที่แพร่หลายมากขึ้นกว่าในผลิตภัณฑ์ยาสูบอื่น ๆ นิโคติน สารเคมีออกหลักในยาสูบ และบุหรี่ ไม่เสพติด [5] ประมาณครึ่งหนึ่งของผู้สูบบุหรี่บุหรี่ตายโรคที่เกี่ยวข้องกับการสูบบุหรี่ [6] และสูญเสียโดยเฉลี่ย 14 ปีของชีวิต [5] ใช้บุหรี่ โดยหญิงตั้งครรภ์ได้รับการแสดงเพื่อทำให้เกิดข้อบกพร่อง รวม ทั้งเกิดต่ำน้ำหนัก ความผิดปกติของครรภ์ คลอดก่อนกำหนดยัง [7] ได้รับการแสดงมือสองควันจากบุหรี่จะเปลือง bystanders, [8] [9] [10] [11] ซึ่งได้นำไปบังคับใช้กฎหมายที่มีห้ามสูบบุหรี่ในพื้นที่สาธารณะและดังมาก บุหรี่ผลิตขวดประกอบด้วยสารเคมีกว่า 4000 นิโคติน คาร์บอนมอนอกไซด์ acrolein และสารอนุมูลอิสระ [12] 50 เหล่านี้เป็นสารก่อมะเร็ง [13] เป็นแหล่งอาศัยของไฟที่นำไปสู่การสูญเสียชีวิตในบ้านส่วนตัว ซึ่งให้สหภาพยุโรปและสหรัฐอเมริกาจะห้ามบุหรี่ที่ไม่ได้มาตรฐานไฟมาตรฐานปี 2011
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