Which statement best describes a noninfectious disease?

Which statement best describes a noninfectious disease?

• A. Cannot spread from person to person.
• B. Are always caused by bacteria.
• C. Can be cured by antibiotics in all cases.
• D. Spread only through direct contact.

Answer: (A)

Noninfectious diseases cannot be passed from one person to another because they do not involve pathogens that spread between people. They arise from factors like genetics, lifestyle, environment, or when the body's systems don't work properly, such as in diabetes, cancer, or heart disease. Because they aren’t caused by contagious agents, you can’t catch them from someone else. Think of antibiotics: they target bacteria, which are a common cause of infectious diseases, but many noninfectious conditions aren’t caused by bacteria, so antibiotics don’t cure them in all cases. Some noninfectious diseases also aren’t spread by direct contact at all, since they aren’t transmitted pathogens to begin with. For these reasons, the statement that noninfectious diseases cannot spread from person to person is the best description.

Noninfectious diseases cannot be passed from one person to another because they do not involve pathogens that spread between people. They arise from factors like genetics, lifestyle, environment, or when the body's systems don't work properly, such as in diabetes, cancer, or heart disease. Because they aren’t caused by contagious agents, you can’t catch them from someone else.

Think of antibiotics: they target bacteria, which are a common cause of infectious diseases, but many noninfectious conditions aren’t caused by bacteria, so antibiotics don’t cure them in all cases. Some noninfectious diseases also aren’t spread by direct contact at all, since they aren’t transmitted pathogens to begin with. For these reasons, the statement that noninfectious diseases cannot spread from person to person is the best description.