Research review
Does dandelion root help with stress? What the research does and doesn't show
No human trial has given people dandelion root and measured stress or cortisol. The closest related research is a mouse study in which an oral dandelion extract lowered stress-hormone levels and behavioral signs of despair over two weeks.
The evidence doesn't support dandelion root tea for stress. No human trial has given people dandelion and measured stress, cortisol, or anxiety symptoms. The closest related research is a two-week mouse study of an oral dandelion extract that lowered stress-hormone levels in a forced-swim test — a specific animal model, not a study of a stressed person.
What the evidence doesn't support
It doesn't support dandelion root — as tea, capsules, or extract — as a way to lower stress, cortisol, or anxiety in a person. No controlled human trial has tested dandelion against any of these. The only related research is in mice, using a different route and dose than a cup of tea or a capsule delivers.
What the trials found
A 2014 study gave mice a water extract of Taraxacum officinale (dandelion) leaves and roots by mouth, in a single dose and again over 14 days, at 50, 100, and 200 mg per kilogram of body weight. In two standard rodent stress-behavior tests, the extract-treated mice spent less time immobile — a marker researchers interpret as behavioral despair — after both a single dose and two weeks of dosing. The same study measured blood levels of corticotropin-releasing factor (CRF), ACTH, and corticosterone, the rodent stress-hormone cascade: a stress test raised all three, and 14 days of dandelion extract brought corticosterone down at every dose and CRF down at the highest dose, compared to stressed mice given no extract.
This is a mouse study using an oral dose scaled to body weight — a 200 mg/kg dose in a roughly 25-gram mouse doesn't translate into a cup of tea or a capsule amount for a person, and no comparable human trial exists. The mice weren't tested for a "stress" a person would recognize; the outcomes were swim-test immobility and blood hormone levels in a lab protocol.
Questions people ask
Does dandelion root tea help with stress?
No human study has tested that. The one related trial gave mice an oral dandelion extract and measured stress-hormone levels and stress-test behavior — not a person drinking tea, and not a validated measure of subjective stress in people.
Does dandelion root lower cortisol?
No study has measured cortisol in a person taking dandelion. The mouse study above measured corticosterone, the rodent equivalent, and found it lower after two weeks of an oral extract dosed by body weight — a finding in mice, at a dose with no worked-out human equivalent.
When to talk to a doctor
Persistent stress that affects sleep, mood, or daily function is worth raising with a doctor, who can rule out other causes and discuss options with a stronger evidence base than a single mouse study. Dandelion root is not a treatment for stress or its physical effects. For dandelion's safety profile, see dandelion root side effects and who should not take dandelion root. For the fuller research picture, see dandelion root: what the research does and doesn't show.
Sources
- Antidepressant effects of the water extract from Taraxacum officinale leaves and roots in mice In mice, two weeks of an oral dandelion extract reduced behavioral signs of despair in stress-test models and lowered stress-hormone levels (corticosterone, and CRF at the highest dose) after a forced-swim stressor.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.