What is a common use for antidepressants?

Antidepressants are commonly used for anxiety reduction because many of the same neurotransmitters involved in mood regulation are also linked to anxiety disorders. For instance, selective serotonin reuptake inhibitors (SSRIs), which are a class of antidepressants, can help alleviate symptoms of both depression and anxiety. This dual efficacy makes antidepressants a frequently prescribed treatment for individuals who experience both conditions, as they can improve overall emotional stability and decrease feelings of anxiousness.

The other options presented are not typical primary uses of antidepressants. While there may be specific contexts in which antidepressants could indirectly assist with issues like insomnia or pain management, especially if those conditions are related to depression or anxiety, they are not used primarily for those purposes. Additionally, antidepressants are not designed to enhance digestive health or directly manage rheumatoid arthritis, which is more typically treated with anti-inflammatory medications or disease-modifying antirheumatic drugs (DMARDs).