Basic and Clinical Sciences Examination (BCSE) Practice Exam 2025 – Comprehensive All-in-One Guide for Exam Success

The statement regarding the likelihood of smokers dying prematurely from smoking-related diseases is backed by substantial epidemiological data. It is estimated that approximately 50% of long-term smokers will eventually die from diseases directly attributable to their smoking habit. This figure highlights the severe health risks associated with tobacco use, including conditions such as lung cancer, chronic obstructive pulmonary disease (COPD), and cardiovascular diseases.

When reviewing the other options, a lower percentage would underestimate the significant impact of smoking on mortality. For instance, a figure like 25% would not encapsulate the extensive research findings which show a much higher risk level among smokers. Similarly, percentages like 75% and 10% also do not reflect the established evidence; while 75% may seem plausible given the severe health consequences, it is more accurate to say that around half of smokers will succumb to smoking-related ailments. Thus, the 50% figure effectively conveys the substantial risk imposed by smoking over a lifetime.