A nurse is teaching a group of clients about the effects of various substances. Which of the following statements by a client indicates an understanding of the teaching?

A. "Nicotine causes an increase in blood pressure.": Nicotine is a stimulant that can constrict blood vessels, leading to an increase in blood pressure and heart rate. It is one of the known cardiovascular effects of smoking. B. "Anabolic steroids stimulate the immune system.": Anabolic steroids can actually have a suppressive effect on the immune system, making users more susceptible to infections. Their primary effects are on muscle growth and secondary male characteristics. C. "Methamphetamine causes weight gain.": Methamphetamine is a stimulant that typically causes weight loss, not weight gain, due to its appetite-suppressing effects and increased metabolism. D. "Amphetamines alleviate symptoms of depression.": While amphetamines can temporarily improve mood and increase energy, they are not a primary or safe treatment for depression.as can lead to dependence, making them inappropriate for long-term management of depression.