Hermetica Superfood Encyclopedia
The Short Answer
Vitamin K1 (phylloquinone) from spinach is a vital fat-soluble nutrient, serving as a coenzyme for proteins essential in blood coagulation and bone metabolism. It plays a critical role in activating clotting factors and facilitating calcium binding to the bone matrix, supporting proper hemostasis and bone mineralization.
CategoryVitamin & Mineral
GroupVitamin
Evidence LevelModerate
Primary Keywordvitamin k1 from spinach benefits
Synergy Pairings4
Vitamin K1 from Spinach — botanical close-up
Health Benefits
Regulates blood coagulation by activating specific clotting factors, ensuring proper hemostasis and wound healing.
Enhances bone mineralization by facilitating the carboxylation of osteocalcin, which binds calcium to the bone matrix.
Supports cardiovascular health by activating matrix Gla-protein (MGP), which inhibits arterial calcification and maintains vascular elasticity.
Provides antioxidant protection, reducing oxidative damage and supporting overall cellular health.
Contributes to skin health by supporting tissue repair and potentially reducing the appearance of vascular discoloration.
Origin & History
Natural habitat
Vitamin K1, or phylloquinone, is a fat-soluble nutrient predominantly found in leafy green vegetables like spinach (Spinacia oleracea). This essential compound is primarily involved in activating proteins necessary for blood coagulation and calcium metabolism. It is crucial for maintaining vascular integrity, supporting skeletal strength, and offering cellular protection, making it a key component in functional nutrition.
“Spinach, the primary source of Vitamin K1, has been cultivated for millennia, originating in ancient Persia and spreading globally. Revered in traditional diets for its vitality-enhancing properties, its natural richness in phylloquinone has made it a keystone nutrient in modern nutritional strategies for supporting cardiovascular, skeletal, and cellular health.”Traditional Medicine
Scientific Research
Clinical research supports Vitamin K1’s role in increasing bone mineral density and reducing fracture risk. Studies also indicate its capacity to prevent arterial stiffening and lower cardiovascular risk through matrix Gla-protein activation. Additional research confirms its antioxidant potential in reducing oxidative stress markers.
Preparation & Dosage
Traditional preparation
Dietary Intake
Best obtained from leafy green vegetables like spinach, kale, and broccoli; consume with a source of fat for optimal absorption.
Supplements
90-120 mcg for adults
Available in capsules, tablets, or liquid drops, often combined with Vitamin D3. Typical daily dosages range from .
Topical Application
Incorporated into skincare formulations to support skin tone, reduce redness, and aid in bruise healing.
Contraindications
Individuals on anticoagulant medications (e.g., warfarin) must monitor intake carefully due to potential interactions.
Nutritional Profile
- Phylloquinone (K1): The primary form of Vitamin K, crucial for the activation of coagulation proteins.
- Cofactor for Gla-Proteins: Essential for the gamma-carboxylation of proteins like osteocalcin and matrix Gla-protein (MGP).
- Fat-Soluble: Requires the presence of dietary fats for efficient absorption in the small intestine.
- Antioxidant Properties: Exhibits mild antioxidant activity, contributing to cellular protection.
How It Works
Mechanism of Action
Phylloquinone (Vitamin K1) from spinach functions as a crucial coenzyme for the post-translational carboxylation of glutamate residues in specific proteins, including blood clotting factors (e.g., factors II, VII, IX, X) and bone proteins like osteocalcin and matrix Gla-protein. This carboxylation enables these proteins to bind calcium, which is essential for their biological activity in hemostasis, bone mineralization, and preventing arterial calcification. Additionally, ethoxy-substituted phylloquinone (ESP), a derivative purified from spinach, has demonstrated anti-proliferative and antimutagenic effects by binding to the DNA minor groove, modulating key regulatory proteins involved in tumorigenesis and tumor suppression.
Clinical Evidence
Clinical research consistently supports Vitamin K1's efficacy in enhancing bone mineral density and mitigating fracture risk, primarily through its role in osteocalcin activation. Studies also highlight its significant contribution to cardiovascular health by activating matrix Gla-protein, which helps prevent arterial stiffening and reduces overall cardiovascular risk. While direct clinical trials on the anti-proliferative effects of spinach-derived ethoxy-substituted phylloquinone in humans are ongoing, in vitro and preclinical studies suggest its potential to modulate tumorigenesis pathways. The established benefits of dietary Vitamin K1 from sources like spinach underscore its importance for maintaining systemic health.
Safety & Interactions
Vitamin K1 is generally considered safe when consumed through dietary sources like spinach, with no known toxicity from food intake. However, it can significantly interact with anticoagulant medications, particularly warfarin, by reducing its effectiveness; patients on such medication should maintain a consistent intake of Vitamin K1 and consult their physician. Other potential interactions include malabsorption issues with certain antibiotics, bile acid sequestrants, and the weight-loss drug Orlistat. For pregnant or breastfeeding individuals, dietary intake of Vitamin K1 from spinach is safe and encouraged, but high-dose supplementation should only be undertaken under medical supervision.
Synergy Stack
Hermetica Formulation Heuristic
Vitamin cofactor
Bone & Joint | Cardio & Circulation | Skin & Collagen
Also Known As
PhylloquinoneVitamin K1
Frequently Asked Questions
What is the primary role of Vitamin K1 (phylloquinone) from spinach in the body?
Vitamin K1 from spinach is primarily known for its essential role in blood coagulation, where it acts as a coenzyme for the synthesis of vital blood clotting factors. It is also crucial for bone health, facilitating the carboxylation of proteins like osteocalcin that help bind calcium to the bone matrix.
How rich is spinach as a source of Vitamin K1?
Spinach is considered one of the richest dietary sources of Vitamin K1, providing high levels ranging from 305 to 971 µg per 100 grams of fresh weight. This makes it an excellent food choice for meeting daily Vitamin K requirements.
Are there other beneficial compounds in spinach besides phylloquinone?
Yes, research has identified other beneficial compounds in spinach. A derivative called ethoxy-substituted phylloquinone (ESP) has been purified from spinach and shows distinct anti-proliferative and antimutagenic effects.
What are the potential benefits of ethoxy-substituted phylloquinone (ESP) from spinach?
Ethoxy-substituted phylloquinone (ESP) has demonstrated promising anti-proliferative and antimutagenic effects. It is suggested to act by binding to the DNA minor groove, down-regulating proteins involved in tumorigenesis pathways, and simultaneously up-regulating tumor suppressor proteins like STAT1 and NDRG1.
How does Vitamin K1 from spinach contribute to cardiovascular health?
Vitamin K1 from spinach supports cardiovascular health by activating matrix Gla-protein (MGP), which is crucial for preventing the calcification and stiffening of arteries. Adequate Vitamin K1 intake can thus contribute to lower cardiovascular risk and maintain arterial flexibility.
Does Vitamin K1 from spinach interact with blood thinning medications like warfarin?
Yes, Vitamin K1 can interact with warfarin and other anticoagulants by reducing their effectiveness, as it promotes blood clotting through the activation of clotting factors. Individuals taking blood thinners should maintain consistent Vitamin K1 intake and consult their healthcare provider before supplementing with spinach extracts or Vitamin K1 supplements. Sudden increases in Vitamin K1 consumption can interfere with medication efficacy and INR (International Normalized Ratio) levels.
What is the recommended daily intake of Vitamin K1, and can you get enough from spinach alone?
The Adequate Intake (AI) for Vitamin K1 is 120 mcg for adult men and 90 mcg for adult women, which can be easily met through diet. A single cup of raw spinach contains approximately 145 mcg of Vitamin K1, making it possible to meet daily requirements through food sources alone. Most people consuming leafy greens regularly do not need supplementation unless they have malabsorption issues or follow restricted diets.
Who should avoid or limit Vitamin K1 from spinach supplementation?
Individuals taking anticoagulant medications (warfarin, dabigatran) should limit supplemental Vitamin K1 intake due to interference with drug efficacy, though dietary sources are generally safe with consistent consumption. People with certain genetic clotting disorders or those scheduled for surgery should discuss Vitamin K1 supplementation with their healthcare provider beforehand. Those with malabsorption conditions affecting fat-soluble vitamin absorption may need medical guidance before supplementing, as Vitamin K1 requires dietary fat for optimal absorption.
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