Notes on Smoking Tobacco

Smoking as a Health Risk
- Most preventable cause of death worldwide.
- Statistics: 443,000 deaths annually in the US due to tobacco; approximately 1,213 deaths daily.

Bronchitis: Inflammation and mucus accumulation in bronchi.
Emphysema: Loss of elasticity in bronchioles; destruction of alveolar sacs inhibiting gas exchange.
Capillary damage due to smoking affects oxygen transport to alveoli.

Toxic Compounds: 4,000 compounds in smoke; 60 are carcinogens.
- Notable Carcinogens:
- Nicotine: Stimulant affecting both CNS and PNS; quick absorption into the brain (7 seconds) with a half-life of 30-40 minutes.
- Tars: Water-soluble residues leading to cancer.
- Acrolein, formaldehyde: Carcinogens damaging cells.
- Nitric oxide, hydrocyanic acid: Gases affecting oxygen metabolism.

Mass Production: Began in the 1880s; popularity surged in the 20th century post-WWI.
Trends: Smoking rates peaked in 1966; significant decline followed due to public health reports.

Statistics: 1965: 42% smokers; 2021: 21% of adults currently smoke.
Demographics:
- Higher prevalence in men vs women.
- American Indians show the highest smoking rates; Asian Americans the lowest.
- Smoking is prevalent among individuals with low income and education.

Genetics: Genetic factors impact vulnerability to nicotine addiction.
Social Pressure: Peer influence contributes to adolescent smoking.
Advertising: Curiosity from exposure to smoking in media influences decisions.
Weight Control: Perceived weight loss benefits lead some, particularly women, to start smoking.

Addiction: Nicotine's addictive nature solidifies smoking habits; low-nicotine cigarettes do not deter smokers.
Reinforcement: Positive effects include relaxation, while negative reinforcement helps avoid withdrawal symptoms.
Optimistic Bias: Smokers underestimate their personal risk of health issues.
Fear of Weight Gain: Concerns about weight gain post-quitting lead many to continue smoking.

Cancer: Major cause of tobacco-related deaths, including lung cancer and cancers of other organs.
Cardiovascular Disease (CVD): Second highest cause of death among smokers; doubled risk compared to non-smokers.
Chronic Lower Respiratory Diseases: Including chronic bronchitis and emphysema due to airway damage.
Other Effects: Increased risk for various diseases, including mouth and kidney disorders, and psychological implications.

Passive Smoking (ETS): Linked to serious health issues in children, including SIDS.
Smokeless Tobacco: Associated with a higher likelihood of transitioning to cigarette smoking among adolescents.

Education Programs: Combined with skill-building to refuse smoking; effective short-term campaigns.
Community Campaigns: Creating smoke-free environments and initiatives can lower smoking rates.

Current Trends: More former smokers than current, with various QUIT strategies available:
- Without Therapy: 44% attempt quitting independently, with a substantial success rate.
- Pharmacological Approaches: Use of nicotine replacement therapies; some medications effective in reducing cravings.
- Psychological Interventions: Combination of therapy and pharmacology improves success rates.
Community Campaigns: Initiatives like smoke-free policies support quitting efforts.

Commonality of Relapse: High rates, especially in the initial months after quitting.
Weight Gain: Common post-cessation; physical exercise can mitigate this issue.

Health Benefits: Quitting reduces mortality by 36% and can add significant years to life expectancy, particularly when done before age 35.