Smoking

• Why smoking is bad

  
  

  Filter only stops some ash and chemicals entering the lungs

  Smoke is inhaled
• Second-hand smoke

  
  

  Smoke exhaled by smoker that still contains toxins
• Burns to mouth and lungs if inhaled air is too hot
• Lung damage

  Tar builds up, reducing surface area for diffusion

  Lung tissue can be destroyed
• Heart and circulatory issues

  Toxins narrow blood vessels - harder to move around

  Nicotine makes heart beat faster - more likely to fail

  Increased risk of blood clots
• Cancer

  Throat, lung, and cervical more common

  Cells mutates