Independent. Evidence-graded. No hype.
Your sea buckthorn questions, answered from the studies
Everything we know about one plant, across 372 guides: what the research shows, what it doesn't, which products are worth your money, and which claims to ignore. 103 of those guides carry an evidence grade, and each source we cite is linked so you can read it yourself.
New here? Start with the Sea Buckthorn Starter Guide, then read how we grade evidence before you trust a word we say.
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372 guides, every one about this single plant
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103 pages carrying an explicit evidence grade
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97 distinct sources cited, each one linked so you can check us
- 8 free calculators built on the same data
Explore by what you came for
16 collections, from the plant itself to the products on the shelf.
Learn
I want to learn
What it is, what it does, and what the research shows.
Choose
I want to buy it
Which form to buy, how brands compare, and what a fair price looks like.
Use
I want to use it
How to take it, cook with it, grow it, and work out your dose.
Before you read a word
Why trust a site you just found?
We grade the evidence
Strong human trials, one small trial, animal research, or tradition. You see the grade before you read the claim.
We publish the nulls
The big 2022 meta-analysis found no effect on blood sugar, blood pressure, or BMI, and a 2022 trial in 111 people with high cholesterol found no change in total cholesterol, LDL-C or triglycerides. Both are on our cholesterol page, in plain sight. Honest negatives are how a site earns trust.
We show our work
241 of our 372 guides list their sources, each one linked. Our scoring method is public. No link on this site earns us anything yet.
How we grade the evidence
When we grade a page, the grade sits at the top, before you read the claim. 103 of our 372 guides carry one today. A page without a grade either makes no health claim, like a recipe or a how-to, or hasn't been graded yet. Where a badge appears, it tells you how much weight the claim deserves.
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Strong human evidence
: what the grades mean
Several well-run randomized controlled trials, or a meta-analysis of them whose trials agree without large unexplained differences.
0 guides carry this grade
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Moderate human evidence
: what the grades mean
One human trial with a clear result on its main outcome, or a few small ones that point the same way, or a meta-analysis whose trials differ widely. Promising, not settled.
14 guides carry this grade
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Preliminary evidence (early or inconclusive)
: what the grades mean
Early or inconclusive: lab or animal research, a human study that was small or uncontrolled, or human data that found no clear effect on its main outcome.
49 guides carry this grade
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Traditional or untested (no clinical trials yet)
: what the grades mean
No clinical trial of the claim yet: either centuries of traditional use, or a claim nobody has tested. Traditional doesn't mean wrong. It means unproven.
40 guides carry this grade
The full method, including what disqualifies a study, is on how we research.
Start here
Three guides that answer most of it
The best sea buckthorn oils, ranked and scored
We compared sourcing, extraction, fatty acid profiles, and cost per day. Here is what came out on top.
Sea buckthorn oil for dry eyes: the 2 gram trial
One hundred people, three months, a placebo group. What it found, and what it did not.
Berry oil vs seed oil: the difference that costs people money
They come from different parts of the same fruit and do different jobs. Most labels will not tell you which one is in the bottle.
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Most read
What readers come here for
The buying and comparison pages that do the most work.
- Best sea buckthorn oil Buying guide
- Best sea buckthorn capsules Buying guide
- Best sea buckthorn skincare Buying guide
- Brands we’ve scored, ranked Brand reviews
- SIBU vs SeabuckWonders Head to head
- How to choose a sea buckthorn product Buyer’s guide
- How to spot a fake sea buckthorn oil Buyer’s guide
- What a fair price actually looks like Pricing
- Sea buckthorn vs fish oil Comparison
- Oil, capsules, juice or powder? Product forms
Free, no sign-up
Work it out yourself
Calculators built on the same numbers as the articles. Nothing is stored.
Dosage calculator
Turns the doses used in real trials into capsules, millilitres, and how long a bottle lasts.
Cost per day calculator
Puts two differently sized bottles on the same footing.
Omega-7 label checker
Paste what a label claims and see how it stacks up against the products we have scored.
The full library
Browse the collections
Learn
I want to learn
8 collections
- Benefits What sea buckthorn is said to do for the body, sorted by how strong the evidence is.
- Nutrition Vitamins, fatty acids and what is in the berry and the oil.
- Safety Side effects, drug interactions and who should avoid it.
- Research The main trials in plain language, null results included.
- Plant Botany, species, identification and look-alikes.
- Regions Where it grows and what buying looks like in the countries covered.
- History The stories, and which of them hold up.
- Glossary The terms on labels and in the trials, defined.
Choose
I want to buy it
4 collections
Use
I want to use it
4 collections
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Frequently asked questions
What is sea buckthorn good for?
The best-supported effect is on blood lipids: a 2022 meta-analysis of 15 randomised trials found sea buckthorn lowered triglycerides, total cholesterol and LDL, and raised HDL. Smaller single trials support dry eye and skin hydration. The same meta-analysis found no significant effect on blood sugar, blood pressure or BMI, which undercuts most of the claims made in supplement marketing.
Is sea buckthorn safe to take every day?
For most healthy adults, yes, at the doses used in trials, 0.5 to 3 grams of oil a day. The important exception is anticoagulant medication: one small human study found berry oil at 5 grams a day reduced platelet aggregation, so anyone on blood thinners or facing surgery should talk to a doctor first. Our safety section covers pregnancy, children, pets and drug interactions separately.
Is SeaBuckthornWorld independent?
Yes. No brand sponsors this site, pays for coverage, or sees a page before it goes live. How the site is funded, and how that’s kept away from product scores, is set out on our affiliate disclosure page.
How do you decide what evidence to trust?
When we grade a page, it gets one of four evidence grades, from strong human trials down to traditional or untested claims with no trials at all. 103 of our 372 guides carry one today. We report null results next to positive ones, link each source we cite so you can open it, and flag retracted studies rather than quietly removing them.
Where does sea buckthorn actually grow?
Hippophae rhamnoides is native to a broad band across Eurasia, from the coasts of northern and western Europe through Russia and Mongolia to the Himalayas and northern China. China accounts for the large majority of world production. It is also cultivated in Canada and, at small scale, in the United States.
About this site
SeaBuckthornWorld covers one plant and nothing else. No brand sponsors the site, pays for placement, or sees a page before it goes live. Each page lists the sources it relies on, and the publisher is responsible for what the pages say.
- Independence No sponsored posts, no paid reviews, no brand approval
- Corrections A fix that changes what a page says gets a dated note on that page and in the corrections log. We flag retracted studies rather than quietly deleting them
- Medical review Pages are not medically reviewed. Talk to a clinician before acting on any of them