Which group is most likely to use herbal supplements according to the text?

The group that is most likely to use herbal supplements includes patients undergoing active medical treatment or monitoring because these individuals often look for additional ways to manage their health and complement their ongoing therapies. They may believe that herbal supplements can enhance the effectiveness of conventional treatment, alleviate side effects, or address symptoms that are not fully managed by their prescribed medications.

This behavior is often influenced by a desire for more control over their health and a search for holistic approaches. Patients undergoing medical treatment are already engaged with their health and may feel empowered to explore alternative options along with their standard care. Furthermore, there is a significant body of reporting and anecdotal evidence suggesting that these patients frequently discuss herbal supplements with their healthcare providers, leading to an increase in usage.

The other groups, such as those not undergoing any medical treatment or completely healthy individuals, tend to have less immediate motivation to seek out herbal supplements since they may not feel the same urgency to address health concerns. Additionally, patients seeking only alternative therapies might focus on non-herbal alternatives that don't mix traditional and complementary approaches, which is not the primary concern of those already engaged in medical treatment.