Which symptom might indicate that a person is experiencing depression?

Lack of interest in sex, also known as anhedonia when described more broadly, is a common symptom associated with depression. Individuals experiencing depression may find that they lose interest in activities they once enjoyed, including sexual activity. This symptom can manifest in various ways, affecting motivation and desire, ultimately leading to a diminished quality of life and potential relationship issues.

Conversely, the other options suggest behaviors that are typically not consistent with depressive symptoms. Increased energy levels and high levels of social interaction might indicate a state of wellbeing or even a manic episode in the context of bipolar disorder, rather than depression. Frequent smiling is often seen as a sign of happiness and well-being, which contradicts the emotional state typically experienced in depression. Understanding these distinctions is crucial in identifying and addressing the symptoms of depression effectively.