Hermetica Superfood Encyclopedia
The Short Answer
Sea grape (Caulerpa racemosa and C. lentilifera) is a marine macroalgae containing polyphenolic antioxidants that upregulate PGC-1α, a master regulator of mitochondrial biogenesis and glucose metabolism. Rat studies demonstrate significant blood glucose reduction and cholesterol lowering at 150 mg/kg body weight, with human clinical trials currently underway.
CategoryFruit
GroupFruit
Evidence LevelStrong
Primary Keywordwhat is Sea Grape
Synergy Pairings4
Sea Grape — botanical close-up
Health Benefits
Provides antioxidant protection through polyphenols, anthocyanins, and vitamin C, reducing oxidative stress and cellular aging.
Supports digestive health with dietary fiber that enhances motility and fosters microbiome balance.
Strengthens immune defense via high vitamin C content that promotes white blood cell function.
Promotes skin vitality by stimulating collagen production and shielding against UV-induced damage.
Aids cardiovascular health through potassium and antioxidant compounds that help manage blood pressure and improve vascular integrity.
Exhibits anti-inflammatory activity through phytochemicals beneficial for arthritis and metabolic health.
Origin & History
Natural habitat
Sea Grape (Coccoloba uvifera) is a salt-tolerant tree native to coastal regions of the Caribbean, Central America, and Florida. It yields clusters of tart-sweet fruits traditionally used for food, medicine, and preservation. These fruits are valued for their rich antioxidant profile and dietary fiber, supporting immune, digestive, and cardiovascular health.
“Sea grapes have long been a part of Caribbean folk diets and remedies, traditionally prepared into syrups or fermented drinks to boost immunity, digestion, and detoxification. Revered in Indigenous herbal medicine to treat digestive disorders, respiratory infections, and skin conditions, their use reflects deep-rooted ecological harmony and nutritional wisdom.”Traditional Medicine
Scientific Research
Studies confirm the antioxidant and anti-inflammatory benefits of polyphenol-rich fruits like sea grapes. Additional research supports their cardiovascular, digestive, and immune-enhancing effects, as well as skin benefits from vitamin C-rich fruits.
Preparation & Dosage
Traditional preparation
Culinary use
Enjoy fresh, in jams, syrups, and sauces; blend into smoothies or ferment into tonics.
Serving
1/2 cup fresh fruit or 2–3 tablespoons of preserves.
Storage
Refrigerate fresh sea grapes for short-term use or preserve for extended shelf life.
Nutritional Profile
- Vitamins: C, A (trace)
- Minerals: Potassium, Magnesium, Calcium
- Dietary Fiber
- Phytochemicals: Anthocyanins, Polyphenols, Flavonoids (quercetin, kaempferol), Phenolic acids
How It Works
Mechanism of Action
Sea grape polyphenolic compounds primarily upregulate PGC-1α (Peroxisome Proliferator-Activated Receptor-γ coactivator 1 alpha), increasing serum concentrations significantly (p<0.05). This master regulator enhances mitochondrial biogenesis and oxidative metabolism, leading to improved glucose homeostasis and lipid metabolism. The mechanism demonstrates dose-dependent efficacy with optimal effects at lower concentrations.
Clinical Evidence
Preclinical rat studies show sea grape extract at 150 mg/kg significantly reduces blood glucose and total cholesterol while increasing PGC-1α levels (p<0.05). A 21-day study using sea grape powder demonstrated significant decreases in Lee's index, total cholesterol, triglycerides, and LDL-cholesterol comparable to orlistat. A randomized, double-blind, placebo-controlled human trial (NCT05037591) involving 70 obese men over 4 weeks is ongoing, with results pending publication. Current evidence remains primarily preclinical, requiring completed human trials for clinical validation.
Safety & Interactions
No severe adverse events have been reported in available preclinical and early-stage clinical trials, with weekly safety monitoring conducted during human studies. No specific drug interactions are documented in current literature, though participants were required to avoid other functional foods or supplements during trials. Safety data in pregnant or lactating women, children, and individuals with iodine sensitivity remains unestablished. Sea grapes may contain iodine, requiring caution in thyroid-sensitive populations.
Synergy Stack
Hermetica Formulation Heuristic
Polyphenol/antioxidant base
Cardio & Circulation | Cognition & Focus | Immune & Inflammation | Gut & Microbiome | Skin & Collagen
Also Known As
Caulerpa racemosaCaulerpa lentiliferaGreen caviarLatoUmi-budōMarine macroalgae
Frequently Asked Questions
What is the optimal dosage of sea grape extract for blood sugar control?
Rat studies indicate 150 mg/kg body weight is more effective than higher doses of 450 mg/kg for glucose reduction. The ongoing human trial uses 1.68 g per 70 kg body weight, converted from the optimal rat dose using standard conversion factors.
How does sea grape extract compare to pharmaceutical weight loss drugs?
In 21-day rat studies, sea grape powder demonstrated cholesterol and triglyceride reductions comparable to or superior to orlistat, a prescription weight-loss medication. However, human clinical trials are still ongoing and results have not yet been published.
Can sea grape extract interact with diabetes medications?
No specific drug interactions are documented in current literature, but sea grape extract significantly reduces blood glucose in animal studies. Patients taking diabetes medications should consult healthcare providers due to potential additive glucose-lowering effects.
What are the active compounds in sea grape that provide health benefits?
Sea grapes contain polyphenolic antioxidants as the primary bioactive constituents, along with specialized lipids. These compounds work by upregulating PGC-1α, a master regulator of mitochondrial function and glucose metabolism.
Is sea grape extract safe for long-term use?
Current safety data is limited to short-term studies of 21 days to 4 weeks with no severe adverse events reported. Long-term safety has not been established, and the extract may contain iodine which could affect thyroid function with prolonged use.
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