Naturopathic and Integrative Claims With No Good Trial Support: A Reader Checklist
A reader checklist for naturopathic and integrative claims that lack good trial support, with a record of what we searched, what we found and how each claim is labeled.
Content last updated . This page has not been medically reviewed.
This page is information only and does not replace medical care. For chest pain, stroke signs, a severe allergic reaction, poisoning or thoughts of suicide, get urgent help first: call 911 in the United States, call or text 988 for a mental health crisis, or call Poison Help at 1-800-222-1222.
Claims checked, what we searched and what we found
| Claim | What we searched and found | Label |
|---|---|---|
| "Adrenal fatigue" is a medical condition | A systematic review searched three databases, found 3,470 articles and included 58 studies. [1] It found conflicting results and concluded there is no substantiation that adrenal fatigue is an actual medical condition. [1] | Proper evidence not found |
| The iris of the eye shows disease (iridology) | We searched PubMed titles for "iridology." One case-control study of 110 people, 68 with proven cancers, had an iridologist suggest diagnoses; the correct diagnosis was identified in only 3 cases. [2] | No good evidence of benefit |
| A drop of live blood under a dark-field microscope reveals health problems | We searched PubMed titles for "live blood." One reliability study had two experienced specialists assess the same samples and concluded the reliability of the diagnostic test is low. [3] | Insufficient evidence |
| Bioresonance devices diagnose or treat illness | We searched PubMed titles for "bioresonance." One 2022 two-group study in mild to moderate depression described the method as energy treatment. [4] Its abstract does not state random assignment or blinding, so we could not rate it. | Proper evidence not found (a well-controlled trial) |
| Electrodermal screening devices detect allergies or deficiencies | We searched PubMed titles for electrodermal tests and screening and found studies of electrodermal activity as a measure of arousal, not evaluations of alternative-medicine screening devices. | Proper evidence not found |
| Detox diets remove toxins | A critical review found no randomized controlled trials of commercial detox diets in humans. [5] NCCIH cites a review finding no compelling research to support detox diets for eliminating toxins. [6] | Proper evidence not found |
| An alkaline diet improves general health | A review of the medical literature said there may be some value in considering an alkaline diet for chronic disease, and that further studies are warranted. [7] | Insufficient evidence |
| Alternative medicine can replace standard cancer treatment | In a US cohort of people with curable cancers, those who chose alternative medicine alone had a higher risk of death than matched patients given conventional treatment (hazard ratio 2.50). [8] | Evidence of harm |
Related pages cover several of these in more depth: live blood analysis, iridology and bioresonance, detox and chelation claims, adrenal fatigue claim check, and what studies found about alternative treatment instead of cancer care.
A reader checklist
Use these questions on any claim, whoever makes it.- What exactly is claimed? Be wary of vague claims such as "supports" or "balances."
- Is there a published human trial of this exact approach? Animal and lab studies come earlier in the chain.
- What was it compared with? Placebo, usual care or nothing.
- What was measured? Symptoms, a lab number or real outcomes.
- Who ran and paid for it? See research quality, funding and conflicts.
- Has anyone else repeated it? One study is rarely enough.
- Does it promise a cure? MedlinePlus lists promises of cures and claims that sound too good to be true as possible signs of health fraud. [9]
- Is it being offered in place of standard care? NCCIH advises against using unproven products or practices to replace or delay medical treatment for cancer. [10]
Where to go next
For the full checking method see how to evaluate a therapy claim. For red flags in marketing see red flags in integrative and naturopathic marketing.Frequently asked questions
Does "Proper evidence not found" mean it does not work?
No. It means we did not find controlled human studies to support the claim in what we could search. Where studies exist and point against a claim, we say so.
Is adrenal fatigue a real diagnosis?
A systematic review of 58 studies concluded there is no substantiation that it is an actual medical condition. [1] Tiredness itself is real, and persistent fatigue is worth raising with a doctor.
Can detox diets remove toxins?
A critical review found no randomized trials of commercial detox diets in humans, and NCCIH cites no compelling research. [5][6]
Can I use alternative medicine instead of cancer treatment?
A US cohort study found higher risk of death for people with curable cancers who chose alternative medicine alone. [8] Talk with your oncology team about anything you use.
How were these claims chosen?
They are claims commonly raised in naturopathic and integrative settings that other pages on this site discuss. The list is not complete.
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
What "Proper evidence not found" means here
Safety
References
- Cadegiani FA et al. Adrenal fatigue does not exist: a systematic review, BMC Endocr Disord 2016. Read 2026-10-22.
- Münstedt K et al. Can iridology detect susceptibility to cancer? A prospective case-controlled study, J Altern Complement Med 2005. Read 2026-10-22.
- Teut M et al. Reliability of Enderlein's darkfield analysis of live blood, Altern Ther Health Med 2006. Read 2026-10-22.
- Muresan D et al. Bioresonance, an alternative therapy for mild and moderate depression, Exp Ther Med 2022. Read 2026-10-22.
- Klein AV et al. Detox diets for toxin elimination and weight management: a critical review of the evidence, J Hum Nutr Diet 2015. Read 2026-10-22.
- “Detoxes” and “Cleanses”: What You Need To Know, NCCIH (last updated March 2025). Read 2026-10-22.
- Schwalfenberg GK. The alkaline diet: is there evidence that an alkaline pH diet benefits health?, J Environ Public Health 2012. Read 2026-10-22.
- Johnson SB et al. Use of Alternative Medicine for Cancer and Its Impact on Survival, J Natl Cancer Inst 2018. Read 2026-10-22.
- Evaluating Health Information, MedlinePlus. Read 2026-10-22.
- Cancer and Complementary Health Approaches: What You Need To Know, NCCIH. Read 2026-10-22.