False health-related speech can cause harm, but it’s not restricted unless it’s obscene. Physicians are obliged not only to correct patients’ false beliefs, but to engage digital spaces in which false claims thrive.

Government can regulate false speech and professional speech, which bans “gag laws” and compelled speech about laws to restrict abortion, for example. How should health professions share regulatory responsibility with government to prevent true speech about health information from being stifled?

Limited understanding of disease etiology often leads to resistance, which can result in low vaccine uptake.

Label analysis is key to educating patients about risks of vitamin A-containing supplements.

Increase in dietary supplement use in the United States suggests a great need for clinicians to be aware of the range of their quality parameters.

Weaknesses in regulatory approaches to negligent misrepresentation claims about dietary supplements can have clinical and public health consequences.

Consider the origins of America’s cosmetic and supplement industry and the advertising practices that sustain it.

Alternatives to suing could help open communication between injured patients and clinicians.

International humanitarian law obliges clinicians to coordinate with local civilian, military, and nongovernment organizations, and implementation isn't easy.