Smoking

Definition

Smoking is the inhalation of smoke from burning tobacco, usually through cigarettes, cigars, or pipes. It has significant detrimental effects on both cardiovascular and pulmonary health.

5 Must Know Facts For Your Next Test

1. Smoking is a major risk factor for developing cardiovascular diseases such as coronary artery disease and stroke.
2. Nicotine in tobacco narrows blood vessels and increases heart rate, contributing to hypertension.
3. Smoking damages the lining of the arteries, leading to atherosclerosis and reduced oxygen delivery to tissues.
4. Chronic obstructive pulmonary disease (COPD) and lung cancer are common respiratory conditions caused by smoking.
5. Dietary antioxidants can help mitigate some oxidative stress caused by smoking but cannot completely reverse its damage.

Review Questions

• How does smoking contribute to hypertension?
• What are two major respiratory conditions associated with smoking?
• Why is a diet rich in antioxidants recommended for smokers?

Related terms

Nicotine: Nicotine is an addictive substance found in tobacco that stimulates the central nervous system.

Atherosclerosis:

Atherosclerosis is the buildup of fats, cholesterol, and other substances in and on artery walls.

Oxidative Stress:

Oxidative stress refers to cell damage caused by free radicals which are often elevated by smoking.