Teens with low iron: nearly 4× more likely to be anxious

In a study of 14,000+ young people, adolescents with iron-deficiency anemia had nearly four times the odds of an anxiety disorder. It takes a simple blood test that most never get.

Anxiety in teenagers is usually treated as purely psychological. A growing body of evidence suggests that, for some, a simple nutrient gap is part of the picture.

The finding

In a large population study of adolescents, those with iron-deficiency anaemia had nearly four times the odds of being diagnosed with an anxiety disorder compared to peers with normal iron. Iron deficiency has also been repeatedly linked to depression.

Why iron matters for mood

Iron is needed to make dopamine and serotonin and to carry oxygen to the brain. When it's low, the brain's chemistry and energy supply both take a hit, which can show up as anxiety, irritability, fatigue, and poor focus.

The easy step that's often skipped

A basic blood test can flag low iron, yet most anxious teens never get one. If anxiety comes with tiredness, pallor, or heavy periods, it's worth asking a doctor to check. Correcting a real deficiency can change the whole picture.

General information only. Testing and treatment should go through a clinician.

This article is for general information and is not a substitute for professional care. If you are in crisis or thinking about harming yourself, please contact your local emergency services or a crisis line. See crisis lines.