Final answer:
Brokers must always act ethically, avoiding deception and fraud, similar to how health professionals should advise against unproven and non-recommended health practices.
Step-by-step explanation:
According to the Canons of Professional Ethics, a broker should never engage in practices that are deceptive or fraudulent. Brokers must adhere to ethical standards that promote trust and integrity in the industry. Ethical conduct includes being honest with clients, providing accurate information, and acting in the best interest of clients. Therefore, in relation to unethical practices such as those propagated by media and pseudojournalism, health professionals, similar to brokers, should discourage patients from resorting to methods that lack scientific validity and are not recommended by medical professionals. This is critical to ensure patient safety and to uphold the integrity of the healthcare profession.