Cortisol findings concern selected stress studies
Some trials summarized by ODS reported lower cortisol alongside changes in perceived stress. Cortisol varies with timing and physiological context. A reduction in a study does not mean every person has excess cortisol or should aim to suppress it. [1][2]
Thyroid effects require particular caution
The hormonal review includes thyroid studies and case observations, and NCCIH discourages use in people with thyroid disorders. A change in thyroid hormone can be biologically important; it should not be treated as a harmless assay fluctuation or a self-treatment strategy. [2][3]
Sex-hormone responses are not uniform
Research includes testosterone findings in some male populations and estrogen or gonadotropin changes in selected female studies. Animal doses, preparations and baseline states differ. The review proposes indirect regulatory mechanisms, but those hypotheses do not predict an individual response. [2]
Interpret tests with symptoms and treatment history
Imagine a hormone result changes after a new extract. Tell the clinician about the product, dose and timing before assuming improvement or disease progression. Do not adjust thyroid or reproductive treatment based solely on a supplement’s hormone-balance claim. [3][4]
| Measure | Required context |
|---|---|
| Cortisol | Timing and stress context |
| Thyroid hormones | Symptoms and treatment |
| Testosterone or estrogen | Population and baseline |
| Changed value | Not automatically beneficial |
Sources for this article
- Ashwagandha: Is it helpful for stress, anxiety, or sleep? - Health Professional Fact Sheet
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Evaluation of Potential Hormonal Activities of Ashwagandha (Withania somnifera) - PMC
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Ashwagandha: Usefulness and Safety | NCCIH
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product. - Dietary Supplements: What You Need to Know
Source consulted: 2026-09-21. This is a reference resource, not a claim that we conducted the studies or tested a product.