Which of the following is NOT a symptom of depression?

In the context of depression, increased energy stands out as something that is typically not associated with the condition. Individuals experiencing depression often report feelings of fatigue, lethargy, and a general lack of motivation which can severely impact their daily functioning.

On the other hand, symptoms such as weight disorders (which can involve either weight loss or weight gain due to changes in appetite), sleep disorders (ranging from insomnia to hypersomnia), and persistent sadness are all commonly recognized signs of depression. These symptoms reflect the mood disturbances and cognitive impairments that occur with this mental health condition. Increased energy contradicts the typical presentation of depression, making it the correct answer in identifying what is not a symptom of the disorder.