Which of the following effects is associated with improved mood from massage therapy?

The improvement in mood associated with massage therapy can be attributed to enhanced serotonin production. Serotonin is a neurotransmitter that plays a key role in mood regulation, and its levels can be positively influenced by therapeutic touch. Research indicates that massage therapy has the ability to increase serotonin levels, which can lead to greater feelings of well-being and happiness. This biological response is one of the reasons why many individuals report feeling more relaxed and emotionally balanced following a massage session.

The other options do not align with the mood-enhancing effects of massage therapy. Increased blood pressure is typically not a desired effect of massage, as massage is known to promote relaxation and reduce stress-related symptoms, which often include lowered blood pressure. Sleep disturbances are generally contrary to the effects associated with massage therapy; instead, massage often aids in improving sleep quality by promoting relaxation. While decreased cortisol levels may also contribute to mood improvement, it does not solely explain the effect on mood as effectively as serotonin enhancement does. Therefore, the enhancement of serotonin production is the most relevant and correct choice associated with improved mood from massage therapy.