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Over 4,000 harmful substances: Why even 'just one more cigarette' could be too many

While quitting can be hard, support systems such as family and medical help can assist you in the process

Published: Fri 6 Jun 2025, 2:39 PM

Smokers are often heard saying: "Just one cigarette is not going to do any harm." Or defending smoking habits on the basis that its only "once in a while".

However, every cigarette contains an immense amount of harm to the smoker, and their loved ones, who may inhale second-hand smoke. One cigarette contains over 4,000 harmful substances, which includes 94 toxic chemicals, Dubai Health Authority warned. These chemicals are even more dangerous when burned.

These chemicals are a major cause of:

  • High blood pressure

  • High cholesterol

  • Cancers (mouth, throat, gums, colon)

  • Asthma and bronchitis

  • Heart attacks, strokes

  • Stomach ulcers

  • Osteoporosis

While quitting can be hard, support systems such as family and medical help can assist you in the process. Along with speaking to your loved ones and setting up an appointment, it is essential to stay away from environments that give you the urge to smoke.

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Setting a quit date and beginning a regular exercise routine can also help, according to DHA. Quitting smoking can greatly improve your quality of life and has many benefits:

  • Halts further damage to body systems and supports tissue repair

  • Restores normal oxygen levels

  • Improves blood circulation

  • Enhances lung function

  • Reduces risk of developing serious illnesses