The statement claims nicotine causes arteries to dilate (expand), increasing heart blood supply. This is incorrect - nicotine actually causes ARTERIAL CONSTRICTION (narrowing), not dilation. Nicotine stimulates the sympathetic nervous system, causing blood vessels to constrict, which increases blood pressure and REDUCES blood flow to the heart. This constriction forces the heart to work harder and increases cardiovascular risk. Therefore, False is the correct answer.