What does the Food and Drug Act of 1938 classify as a drug?

The Food and Drug Act of 1938 defines a drug as any article that affects the structure or function of the body. This definition encompasses a wide range of products, including medications and therapeutic agents. The act was pivotal in ensuring that substances used to alter physiological functions or impact health are properly regulated and safe for consumer use. As such, this classification is critical in distinguishing drugs from other products such as cosmetics or food, which do not necessarily have therapeutic effects or intended uses related to altering the body's functioning.

The other choices do not meet the criteria set forth by the act. Products intended solely for cleansing or beautification are classified as cosmetics and do not affect body structure or function in the therapeutic context. Similarly, food items are categorized for consumption purposes and are not classified as drugs under this act, as their primary function is nutritional rather than medicinal.