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Omega-7 (Sea Buckthorn) supplement
Fatty Acid

Omega-7 (Sea Buckthorn): Benefits, Dosage, Forms & Research

Fatty Acid

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

Omega-7 (palmitoleic acid) from sea buckthorn oil may improve cardiovascular markers by lowering triglycerides, reducing CRP inflammation, and improving insulin sensitivity. It acts as a lipid-signaling molecule between fat tissue and the liver. Typical dosing is 210-420mg purified palmitoleic acid daily.

Key Facts

What it is
A monounsaturated fatty acid (palmitoleic acid, 16:1n-7) that functions as a lipokine
Primary benefits
  • Reduces triglycerides and LDL cholesterol
  • Lowers CRP (C-reactive protein) inflammation
  • Improves insulin sensitivity
  • Supports healthy lipid signaling
  • May reduce hepatic fat accumulation
Typical dosage
210-420mg purified palmitoleic acid daily
Evidence level
Emerging
Safety profile
Generally Safe

What the Research Says

Omega-7 research is still in its early stages but shows promising cardiometabolic effects. The foundational mechanistic study by Cao et al. (2008) in Cell identified palmitoleic acid as a lipokine — a fat-derived hormone that communicates between adipose tissue and the liver. Bernstein et al. (2014) conducted the most cited clinical trial, demonstrating significant triglyceride and CRP reductions with purified palmitoleic acid supplementation. Epidemiological data from Mozaffarian et al. (2010) in Annals of Internal Medicine found that circulating trans-palmitoleate levels were associated with lower metabolic syndrome risk. More large-scale RCTs are needed to establish definitive cardiovascular endpoints.

Benefits of Omega-7 (Sea Buckthorn)

  • Triglyceride reduction — Bernstein et al. (2014) found that purified palmitoleic acid (220mg/day) reduced triglycerides by 15% and CRP by 73% over 30 days in a double-blind RCT of hyperlipidemic adults.
  • Anti-inflammatory effects — the same study showed dramatic CRP reduction, suggesting omega-7 may address the inflammatory component of cardiovascular disease independent of lipid effects.
  • Lipokine signaling — Cao et al. (2008) in Cell identified palmitoleic acid as a lipokine that suppresses hepatic lipogenesis and improves insulin signaling, representing a novel mechanism for metabolic regulation.
  • Mucosal health — sea buckthorn oil (rich in omega-7) has demonstrated benefits for dry eyes, dry mouth, and vaginal mucosal health, likely through improved mucosal membrane integrity.
Did you know?

Omega-7 research is still in its early stages but shows promising cardiometabolic effects.

Forms of Omega-7 (Sea Buckthorn)

FormBioavailabilityBest For
Purified Palmitoleic Acid (from fish/anchovy oil)HighMost concentrated — >50% palmitoleic acid with minimal palmitic acid contamination
Sea Buckthorn Oil CapsulesModerateWhole-food source — contains omega-7 plus carotenoids, vitamin E, and omega-3/6/9; lower concentration
Macadamia Nut OilModerateDietary source — naturally rich in omega-7 but impractical as a supplement for targeted dosing

Dosage Recommendations

General recommendation: 210-420mg purified palmitoleic acid daily

Timing: With a fat-containing meal for optimal absorption • Take with food for best absorption.

Dosage by Condition

ConditionRecommended DoseEvidence
Elevated triglycerides210-420mg palmitoleic acid dailyEmerging
Systemic inflammation (elevated CRP)220mg palmitoleic acid dailyEmerging
Mucosal dryness2000mg sea buckthorn oil dailyModerate

Upper limit: 500mg palmitoleic acid/day (limited data at higher doses)

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Mild GI symptoms (burping, fishy taste with anchovy-derived forms)
  • Loose stools at higher doses
  • Skin flushing (rare)

Drug & Supplement Interactions

  • Blood thinners — theoretical additive effect; monitor if on anticoagulants
  • Diabetes medications — may enhance insulin-sensitizing effects; monitor blood glucose
  • Other lipid-lowering supplements — additive effects possible
Check Omega-7 (Sea Buckthorn) interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

Heart Health

Related Supplements

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Frequently Asked Questions

How is omega-7 different from omega-3?

Omega-3 (EPA/DHA) is a polyunsaturated fatty acid that primarily works through anti-inflammatory pathways and membrane fluidity. Omega-7 (palmitoleic acid) is a monounsaturated fatty acid that functions as a lipokine — a signaling molecule between fat tissue and the liver. They have complementary but distinct mechanisms: omega-3 excels at reducing triglycerides and inflammation, while omega-7 uniquely influences hepatic lipogenesis and insulin signaling. They can be safely taken together.

Should I choose purified omega-7 or sea buckthorn oil?

For targeted cardiovascular support, purified palmitoleic acid supplements are preferred because they deliver a concentrated dose (>50% palmitoleic acid) without excess palmitic acid (a saturated fat that may counteract benefits). Sea buckthorn oil typically contains only 30-35% palmitoleic acid alongside significant palmitic acid. However, sea buckthorn oil offers additional benefits from its carotenoids and vitamin E content, making it better suited for mucosal health and skin support.

Is the evidence for omega-7 strong enough to recommend it?

The evidence is promising but still emerging. There is one well-designed RCT (Bernstein et al., 2014) showing impressive triglyceride and CRP reductions, plus strong mechanistic data from animal studies. However, we lack large-scale human trials with cardiovascular endpoints. Omega-7 is reasonable to try for people seeking additional cardiometabolic support beyond omega-3, especially if they have elevated CRP or triglycerides, but it should not replace proven interventions like omega-3, statins, or lifestyle changes.

References

  1. (). Purified palmitoleic acid for the reduction of high-sensitivity C-reactive protein and serum lipids: a double-blinded, randomized, placebo controlled study. Journal of Clinical Lipidology. DOI
  2. (). Identification of a lipokine, a lipid hormone linking adipose tissue to systemic metabolism. Cell. DOI