Sea Buckthorn Berry Powder Activates AMPK, Lowers LDL and TG, Increases Stem Cells and May Be Anti-Cancer
by Nils Osmar. Updated March 7, 2026
The information in this article is not intended as, and should not be taken as, medical advice. Interventions like exercising, dietary changes, and taking medications and supplements can have both benefits and side effects. Please consult with a medical professional about any medical concerns.
Important note:Sea buckthorn is not the same plant as buckthorn. They share a name and nothing else. Buckthorn can be toxic; sea buckthorn (Hippophae rhamnoides L.), when used thoughtfully, has an increasingly robust body of evidence behind it as a multi-target health supplement — particularly for people interested in healthy life extension.
I’ve been taking sea buckthorn berry powder, and sometimes the oil, for the past several years. In this updated article I want to lay out clearly what the research actually supports — and where it’s still maturing.
Why I Take It
- It activates AMPK (a key longevity pathway) and specifically the AMPK/SIRT1 axis
- Its active compounds show significant anti-cancer effects in preclinical research
- It supports healthy autophagy in cardiovascular tissue
- It lowers LDL cholesterol and triglycerides — in people with elevated lipids
- It supports stem cell mobilization in healthy human subjects
- It contains nearly 200 bioactive compounds with anti-inflammatory, antioxidant, and cardioprotective properties
Let me go through each of these in more depth, with the research behind them.
How I Take It
add sea buckthorn berry powder to my morning coffee, or mix it in some yogurt. It has a sour, tangy flavor — reminiscent of grapefruit peel to me. It’s not subtle. If that doesn’t appeal to you, mixing it into a small amount of water and drinking it quickly before your coffee might be an alternative. I take it during my eating window rather than during extended fasts.
What Kind I’m Taking
I use sea buckthorn berry powder from Loov, a brand I’ve had consistently good experiences with in terms of quality and third-party testing. I stir it into my morning decaf coffee or mix it in water. Many brands are frankly terrible, full of maltodextrin.
I don’t take it during extended fasts or fasting-mimicking periods. I do take it during my normal eating window on regular days.
What’s In It
Sea buckthorn contains nearly 200 known bioactive metabolites. The ones that show up most consistently in the research literature as driving its health benefits are:
- Isorhamnetin — a flavonoid with documented anti-tumor, anti-inflammatory, and cardiovascular-protective effects. It activates AMPK via the upstream kinase CaMKK2 and has been studied extensively in cancer cell research.
- Quercetin — a well-known flavonoid with anti-tumor, anti-inflammatory, and cardioprotective properties. In liver cancer cells, it activates autophagy by inhibiting the AKT/mTOR pathway.
- Gallic acid — a polyphenol with antioxidant and anti-proliferative effects documented across multiple cancer cell lines.
- Protocatechuic acid — shown to safeguard healthy cells from oxidative stress while also exhibiting anti-tumor activity.
- Beta-sitosterol — a phytosterol associated with anti-inflammatory effects and possible inhibition of cancer cell proliferation.
- Omega fatty acids (3, 6, 7, and 9) — particularly in the oil form; sea buckthorn is one of the few plant sources of omega-7 (palmitoleic acid), which has documented cardioprotective effects.
Understanding which compounds are active matters, because different preparations (powder vs. oil, berry vs. seed vs. leaf) have different profiles. The berry powder and berry extract tend to be richest in flavonoids and polyphenols; the oil is richest in fatty acids.
AMPK Activation
AMPK (AMP-activated protein kinase) is sometimes called the “longevity switch” — a cellular energy sensor that, when activated, initiates a cascade of protective processes including autophagy, fat burning, and anti-inflammatory signaling. It’s the pathway activated by fasting, caloric restriction, exercise, and drugs like metformin.
Sea buckthorn’s activation of AMPK is documented and appears to work through a specific route. A 2024 review in Frontiers in Cardiovascular Medicine found that sea buckthorn freeze-dried powder activates the AMPK/SIRT1 pathway, improving lipid metabolism and promoting the formation of metabolically active beige adipose tissue (a type of fat that burns calories rather than storing them). Isorhamnetin, one of sea buckthorn’s key flavonoids, has been identified as an AMPK activator operating through the upstream kinase CaMKK2.
AMPK and mTOR are not simply opposites. They’re counterbalancing regulators of cellular metabolism. AMPK is catabolic (breakdown, cleanup, repair); mTOR is anabolic (building, growth). Both are essential. My personal approach is to favor AMPK activation most of the time — roughly 75% — while ensuring I’m also getting enough mTOR stimulation to maintain muscle mass and prevent sarcopenia. Sea buckthorn fits well into the AMPK-activation side of that protocol.
Anti-Cancer Components
Sea buckthorn has attracted serious attention from cancer researchers, and the mechanistic evidence from laboratory and animal studies is genuinely compelling. The honest summary of where the science stands:
What the preclinical research shows:
A 2024 review published in Frontiers in Nutrition (Xu et al.) found sea buckthorn’s active components — particularly isorhamnetin, quercetin, gallic acid, and protocatechuic acid — to have significant anti-tumor effects across multiple cancer types and mechanisms. These include:
- Inducing apoptosis (programmed cancer cell death) across multiple cancer cell lines
- Blocking cancer cell proliferation by interfering with cell cycle signaling
- Inhibiting cancer cell migration and invasion
- Protecting healthy cells from oxidative damage during chemotherapy and radiation
- Suppressing NF-κB and other pro-inflammatory signaling pathways that promote tumor growth
The important caveat:
The same review notes that, due to a relative lack of in vivo experiments and clinical trials, further research is necessary to validate sea buckthorn’s potential as an anti-cancer agent in humans. Most of the compelling evidence is from cell cultures and animal models. This matters. Cell culture results frequently don’t translate directly to human outcomes, and the field is still waiting on robust human clinical trial data specifically for cancer prevention.
This doesn’t mean the evidence isn’t worth taking seriously. It means we should say “promising preclinical evidence for anti-cancer properties” rather than “sea buckthorn is anti-cancer,” which would overstate what’s been established.
Autophagy: Some Nuanced Data
Sea buckthorn’s relationship to autophagy is real but context-dependent — and the nuance is actually more interesting than a simple “it promotes autophagy” claim.
In cardiovascular tissue, sea buckthorn flavonoids promote autophagy in a beneficial way. A 2024 Frontiers in Cardiovascular Medicine review found that sea buckthorn flavonoids increase proteins associated with autophagy induction (beclin-1 and LC3) in arterial tissue, helping clear damaged cellular components and slow the progression of atherosclerosis.
In cancer cells, the story is different. Sea buckthorn’s isorhamnetin actually inhibits autophagy in gastric cancer cells under hypoxic conditions — and this appears to be part of how it kills them. By suppressing the PI3K-AKT-mTOR pathway in cancer cells, it blocks their ability to use autophagy as a survival mechanism, pushing them toward apoptosis instead.
This is not a contradiction — it’s context-dependent biology. The same compound can do different things in healthy tissue versus cancer cells. But it’s worth being accurate about: sea buckthorn doesn’t simply “promote autophagy” across the board. It appears to regulate autophagy in ways that favor healthy cells and disfavor cancer cells. That’s a more specific and arguably more impressive claim.
Cardiovascular Benefits: Lipids, Blood Pressure, and Platelet Health
This is one of the best-supported areas of sea buckthorn research, with evidence from both animal studies and human clinical trials.
A systematic review and meta-analysis of 11 randomized controlled trials found that sea buckthorn berries and extracts significantly reduced total cholesterol, LDL cholesterol, and triglycerides in people with hyperlipidemia. The cardio-protective effects are attributed primarily to its flavonoid and beta-sitosterol content.
A 2024 Frontiers in Cardiovascular Medicine review adds additional documented mechanisms:
- Anti-platelet aggregation — sea buckthorn interferes with thrombin receptors on platelets and inhibits the arachidonic acid pathway, reducing clotting risk
- Antioxidant and anti-inflammatory effects on vascular endothelial cells — blocking NF-κB and MAPK signaling pathways that drive arterial inflammation
- Blood pressure normalization in hypertensive patients
One important nuance on the lipid effects: Clinical trial data shows that sea buckthorn improves lipid metabolism in people with dyslipidemia (elevated cholesterol or triglycerides). In people with already-normal lipid levels, the effects on blood lipids appear to be minimal. This is actually not unusual for food-based interventions — the body tends to maintain homeostasis when baseline levels are healthy, and the most measurable benefits go to those with room for improvement.
Stem Cell Mobilization
One of the most intriguing documented effects of sea buckthorn comes from a human study examining the effects of sea buckthorn berry polyphenol extract (SBB-PE) on circulating stem cells.
The study found that consumption of SBB-PE resulted in selective mobilization of specific stem cell types from bone marrow into circulation — particularly those involved in regenerative and reparative functions. Once in circulation, these stem cells can participate in tissue repair and help modulate local inflammation.
As the study authors wrote: “By documenting the ability of SBB-PE to support stem cell mobilization and to increase the number of circulating stem cells, we have uncovered a new mechanism of action behind many of the health benefits that have been historically associated with SBB, as a part of its use in Tibetan, Mongolian, and Chinese traditional medicine.”
This is meaningful because it’s a human trial demonstrating an effect on stem cell biology — not just a cell culture finding.
A Note on Fasting: Why I Pause Sea Buckthorn During Extended Fasts
This part is speculative; it’s my own thinking and may or may not be borne out by future studies.
During an extended fast of three days or more — or a fasting-mimicking protocol — the body enters a state in which it preferentially identifies and breaks down senescent and damaged cells for fuel. One of the signals it uses to identify these cells is their dysfunctional or exhausted state, including mitochondrial markers and cell surface proteins.
After the fast, the bone marrow releases a flood of new stem cells that circulate and replace cleared-out cells. Dr. Valter Longo’s research at Stanford has documented this regenerative cycle.
My concern with taking stem cell mobilizers like sea buckthorn during a fast is this: if I’m stimulating stem cell release while the body is in its cleanup phase, I may be sending new cells into a landscape that isn’t yet ready to receive them efficiently — or potentially interfering with the body’s own clearing signals.
My practice is to pause sea buckthorn during any fast longer than 24 hours, then resume when eating normally. This is precautionary reasoning, not proven protocol.
Powder vs. Oil: Which Form and When
Berry powder is what I currently take most consistently. It’s rich in flavonoids, polyphenols, and the water-soluble bioactives associated with AMPK activation and anti-cancer properties.
Berry oil is where the fatty acid profile (including omega-7 palmitoleic acid) concentrates. It has documented cardiovascular benefits and is the form used in most of the stem cell mobilization research.
One important caution: Sea buckthorn oil has blood-thinning properties. If you’re taking anticoagulants or blood thinners of any kind, consult your doctor before adding sea buckthorn oil to your regimen. I personally stopped taking the oil partly for this reason and now use the powder instead.
The Bottom Line
Sea buckthorn is one of the more interesting anti-aging supplements I’ve encountered, because its documented mechanisms are varied, its active compounds are well-characterized, and it’s been part of traditional medicine across multiple cultures for over a thousand years.
What the evidence firmly supports: AMPK/SIRT1 activation, cardiovascular and lipid benefits (especially in people with elevated lipids), stem cell mobilization in humans, and strong preclinical evidence for anti-cancer properties.
What deserves honest caveating: the anti-cancer findings are mostly preclinical, and we’re still waiting on robust human clinical trials. The autophagy effects are context-dependent, not a universal “autophagy booster.” The lipid benefits are most pronounced in people with actual dyslipidemia.
Please consult a healthcare professional before making significant changes to your supplement regimen, especially if you have existing health conditions.
Study references:
- Xu D, Yuan L, et al. (2024). Research progress on antitumor effects of sea buckthorn. Frontiers in Nutrition, 11:1430768.
- 2024 Frontiers in Cardiovascular Medicine review: Sea buckthorn in prevention and treatment of cardiovascular disease. Front. Cardiovasc. Med. 11:1477636.
- “Rapid and selective mobilization of specific stem cell types after consumption of a polyphenol-rich extract from sea buckthorn berries (Hippophae) in healthy human subjects.” (Stem cell mobilization study)
- “Effect of sea buckthorn (Hippophae rhamnoides L.) on blood lipid profiles: A systematic review and meta-analysis from 11 independent randomized controlled trials.”
- Study: The Anti-Cancer Activity of Sea Buckthorn
- Study:Rapid and selective mobilization of specific stem cell types after consumption of a polyphenol-rich extract from sea buckthorn berries (Hippophae) in healthy human subjects
Hello, please explain what SBB-PE means, is this shorthand for a specific extract of the berry? Thanks.
Hi Mike, SFF-PE is an extract of sea buckthorn berries.