Smoking

• Smoking increases your chances of risk of developing lung cancer by 20-30%
• Smoking is dangerous because it can harm almost every part of your body, including your lungs, heart, brain, and immune system.
• • CancerSmoking can cause cancer in your lungs, mouth, throat, esophagus, larynx, bladder, kidney, liver, pancreas, stomach, cervix, colon, and rectum. 
• Heart disease

  Smoking can increase your risk of heart disease and stroke. Carbon monoxide in tobacco smoke can reduce the amount of oxygen in your blood, which forces your heart to work harder. Nicotine can also increase your blood pressure and heart rate, and narrow your arteries.
• Lung damage

  Tobacco smoke contains chemicals like acrolein, which can damage your lungs and cause a sore throat.
• Immune system

  Smoking can reduce your immune function and cause inflammation, which can lead to autoimmune conditions.
• Other health problems

  Smoking can also cause acid reflux, allergies, ADHD, Alzheimer's, bipolar disorder, Crohn's disease, chronic pain, depression, and more.
• • ChemicalsTobacco smoke contains over 5,000 chemicals, including nicotine, arsenic, benzene, beryllium, cadmium.
• Passive smoking

  Secondhand smoke can be hazardous, especially for children.
• People who smoke do so because they are addicted to nicotine, but the harm comes from the tar, carbon monoxide, and other chemicals in the smoke
• Many of the chemicals can cause cancer. Others are poisonous. When you smoke, these chemicals damage your lungs and can pass into your blood and spread through your body.
• The chemicals in tobacco smoke include at least 69 carcinogens (cancer-causing substances). These include formaldehyde, hydrogen cyanide, ammonia, acetone, methane, nitrogen oxides, sulfur dioxide, and many others.