Which of the following factors in a client record would require follow-up by the nurse?

The factor that would require follow-up by the nurse is the client's use of e-cigarettes. Smoking e-cigarettes poses various health risks, including respiratory issues, potential cardiovascular problems, and concerns about nicotine addiction. Unlike traditional cigarettes, where the dangers are well-documented, e-cigarettes are still being studied, and their long-term effects remain unclear. Because of these health implications, their use warrants further assessment and intervention by healthcare professionals to support the individual in making safer choices for their health.

In contrast, a balanced diet, daily exercise, and low cholesterol levels are indicative of healthy lifestyle choices and outcomes that generally do not require immediate follow-up or intervention unless there are specific concerns or symptoms related to these factors.