“Proven” vs “studied”
| Phrase | Implies | Fair for shilajit? |
|---|---|---|
| Clinically proven | Consistent, replicated evidence of an effect | No |
| Clinically studied | At least one human trial exists | Yes, if the ingredient and study are named |
| Research-backed | Vague | Only with specifics |
What the trials actually show
Human trials include one on testosterone in 75 healthy men aged 45–55,[1] an uncontrolled study of sperm quality,[2] an 8-week exercise trial,[3] a 48-week bone density trial in postmenopausal women,[4] and a trial on sexual function in women.[5] Each is a single, small study, which is why no topic rates above “Limited” on our evidence rating system.
Is the product the one studied?
Several trials used a branded standardised extract. A product using a different shilajit can’t borrow those results; see standardised and branded extracts. Ask which extract, which dose and which study.
UK rules
In UK marketing, food supplements may only use health claims authorised on the GB register.[6][7] The ASA has also ruled that supporting articles don’t make an unauthorised claim acceptable.[8] See what sellers can and can’t claim.
What fair wording would look like for each trial
| Trial | Fair description | Overreach |
|---|---|---|
| Testosterone, 2016[1] | “One trial in men aged 45–55 reported higher testosterone than placebo” | “Clinically proven to boost testosterone” |
| Sperm quality, 2010[2] | “An uncontrolled study reported changes in semen measures” | “Proven to improve fertility” |
| Exercise, 2019[3] | “One 8-week trial reported better strength retention” | “Clinically proven for muscle” |
| Bone density, 2022[4] | “One 48-week trial in postmenopausal women” | “Proven to strengthen bones” |
Even fair descriptions are subject to UK health-claim rules in marketing.[6][7]
Red flags in clinical claims
- No study named“Clinically proven” with no citation.
- Animal or cell study citedPresented as if it were human evidence; see human vs animal evidence.
- A different extractThe study used another ingredient.
- Abstract-only claimsResults quoted without the study’s limits.
- Percentages without context“Up to 20% more” with no group sizes or placebo comparison.
How to check a cited study yourself
- Find it on PubMedSearch the title or authors.
- Check who took partPeople or animals? How many? Which age and sex?
- Check the designRandomised and placebo-controlled?
- Check the productSame extract and dose as the product you are looking at?
- Check the outcomeSomething people notice, or a marker?
More help: how to read a shilajit study and sample size.
Frequently asked questions
Is shilajit clinically proven?
No. There are a few small human trials, mostly of one branded extract, without independent replication.
Is “clinically studied” an honest claim?
It can be, if it names the ingredient and study and the product contains that ingredient at the studied dose.
How many shilajit clinical trials are there?
A small number of human trials, each on a different topic. See shilajit research.
Can UK sellers say shilajit is clinically proven?
What would make shilajit “proven”?
Several well-designed randomised trials with consistent results, including independent replication.
How do I report a misleading claim?
What does “up to 20% increase” mean in a shilajit advert?
Usually an average change in one study group, compared with placebo. Ask which study, how many people, and whether the product matches the extract and dose studied.
Are animal studies “clinical”?
No. Clinical studies involve people. Animal and cell studies are preclinical and can’t support claims about humans.
Sources & further reading
Primary research, regulators and standards bodies are cited first. A source being listed here does not mean it supports every claim made by sellers; it supports the specific statement it is attached to.
- Pandit S, Biswas S, Jana U, De RK, Mukhopadhyay SC, Biswas TK. Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia 48(5):570–575, 2016. PMID 26395129. View source (opens in a new tab) [Randomised controlled trial]
- Biswas TK, Pandit S, Mondal S, et al.. Clinical evaluation of spermatogenic activity of processed Shilajit in oligospermia. Andrologia 42(1):48–56, 2010. PMID 20078516. View source (opens in a new tab) [Uncontrolled clinical study]
- Keller JL, Housh TJ, Hill EC, Smith CM, Schmidt RJ, Johnson GO. The effects of Shilajit supplementation on fatigue-induced decreases in muscular strength and serum hydroxyproline levels. Journal of the International Society of Sports Nutrition 16:3, 2019. doi:10.1186/s12970-019-0270-2; PMID 30728074. View source (opens in a new tab) [Randomised controlled trial]
- Pingali U, Nutalapati C. Shilajit extract reduces oxidative stress, inflammation, and bone loss to dose-dependently preserve bone mineral density in postmenopausal women with osteopenia: a randomized, double-blind, placebo-controlled trial. Phytomedicine 105:154334, 2022. doi:10.1016/j.phymed.2022.154334; PMID 35933897. View source (opens in a new tab) [Randomised controlled trial]
- Mosavi et al.. Effects of oral Shilajit tablets on sexual function and sexual quality of life among reproductive-aged women: a triple-blind randomized clinical trial. Traditional Medicine Research 8(11):66, 2023. View source (opens in a new tab) [Randomised controlled trial]
- Department of Health and Social Care. Great Britain nutrition and health claims (NHC) register. GOV.UK. View source (opens in a new tab) [Official register]
- Committee of Advertising Practice. UK Code of Non-broadcast Advertising (CAP Code), Section 15: Food, food supplements and associated health or nutritional claims. asa.org.uk. View source (opens in a new tab) [Advertising code]
- NutraIngredients. ASA pulls Willys ads off air due to unauthorised health claims and hashtags. nutraingredients.com, 2023. View source (opens in a new tab) [Trade press report of ASA ruling]