Effects of Smoking on Disease - GCSE Biology

🦊 In this GCSE Biology video, we discuss the harmful effects of cigarette smoke, containing thousands of chemicals, on health. Smoking is a major risk factor for lung diseases like asthma, COPD, and lung cancer, as well as cardiovascular diseases. The video explains how smoking damages lung alveoli, reducing their surface area and impairing oxygen absorption, leading to conditions like emphysema. It also covers the impact of smoking on pregnant women, highlighting risks like low birth weight, premature birth, and miscarriage due to reduced oxygen supply to the fetus. Additionally, the video presents data showing correlations between smoking and health issues, such as the relationship between the number of cigarettes smoked by pregnant women and reduced fetal birth weight, illustrating causation. The importance of understanding these effects for exams, particularly in interpreting data, is emphasized.

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