Which of the following is a fact about the impact of nicotine on overall health?

• A. Nicotine is a harmless substance found in tobacco products.
• B. Nicotine increases heart rate and blood pressure, raising the risk of cardiovascular disease.
• C. Nicotine improves lung function and respiratory health.
• D. Nicotine consumption has no effect on the nervous system.

Answer: (B)

Verified step by step guidance

1. Step 1: Begin by analyzing the question to understand the focus, which is the impact of nicotine on overall health. Nicotine is a chemical compound found in tobacco products and has significant physiological effects.
2. Step 2: Evaluate each statement provided in the question. The first statement, 'Nicotine is a harmless substance found in tobacco products,' is incorrect because nicotine is known to have harmful effects on the body.
3. Step 3: Consider the second statement, 'Nicotine increases heart rate and blood pressure, raising the risk of cardiovascular disease.' This aligns with scientific evidence showing that nicotine stimulates the release of adrenaline, leading to increased heart rate and blood pressure, which can contribute to cardiovascular issues.
4. Step 4: Assess the third statement, 'Nicotine improves lung function and respiratory health.' This is incorrect because nicotine and tobacco products are associated with respiratory problems, including reduced lung function and increased risk of diseases like chronic obstructive pulmonary disease (COPD).
5. Step 5: Examine the fourth statement, 'Nicotine consumption has no effect on the nervous system.' This is false because nicotine affects the nervous system by acting as a stimulant, altering neurotransmitter release, and potentially leading to addiction.