Question

a recent study found that disorders, such as depression, can run in the same family. what valuable insight about mood disorders can be inferred from these results?
health professionals should exclude family history when diagnosing mood disorders.
both family history and external factors can trigger the onset of depression and bipolar disorder.
children are unlikely to receive a mood disorder diagnosis if their parents were previously diagnosed.
when looking at a family tree, mood disorders rarely appear across several ancestral lineages.

Explanation:

• Option 1: If mood disorders run in families, excluding family history is incorrect. Family history is relevant.
• Option 2: Since disorders can run in families (family - history aspect) and mood disorders also have external triggers (like stress, trauma etc.), this option is logical.
• Option 3: If mood disorders are familial, children are more likely, not less likely, to be diagnosed if parents were.
• Option 4: The study says disorders run in the same family. So, they can appear across ancestral lineages.

Answer:

B. Both family history and external factors can trigger the onset of depression and bipolar disorder.