Chlorella
The nutrient-dense freshwater algae with unique detoxification and immune-supporting properties
Also known as: Chlorella vulgaris • Chlorella pyrenoidosa • Broken Cell Wall Chlorella
Overview
Chlorella is a single-celled freshwater green algae that is one of the most nutrient-dense foods on Earth. It contains 50-60% protein by weight, all essential amino acids, chlorophyll (the highest concentration of any plant), vitamins, minerals, and a unique compound called Chlorella Growth Factor (CGF). Chlorella has been extensively studied in Japan, where it is the most popular supplement. Its cell wall binds heavy metals and toxins, making it a popular detoxification agent. Clinical studies show benefits for immune function, cholesterol, blood pressure, and heavy metal excretion. The cell wall must be cracked or broken during processing for the nutrients to be bioavailable — 'broken cell wall' chlorella is the standard.
Key Benefits
Heavy Metal Detoxification
Chlorella's cell wall has a unique ability to bind heavy metals (mercury, lead, cadmium) and other environmental toxins. Animal studies show chlorella reduces heavy metal absorption from food by 40-60% and accelerates excretion. It's commonly used during dental amalgam removal protocols.
Immune System Enhancement
Chlorella stimulates the immune system by increasing natural killer cell activity, interferon production, and T-helper cell counts. A study in healthy adults found 5g/day for 8 weeks significantly increased salivary IgA (mucosal immunity) and NK cell activity.
Cholesterol & Blood Pressure
Clinical trials show chlorella supplementation reduces total cholesterol, LDL, and triglycerides while modestly lowering blood pressure. A meta-analysis found significant reductions in total cholesterol and diastolic blood pressure.
Nutrient Density
Chlorella provides an extraordinary concentration of nutrients: 50-60% complete protein, iron (up to 40% DV per serving), B12 (one of the few plant sources), chlorophyll, omega-3 fatty acids, and Chlorella Growth Factor (CGF) — a nucleotide-peptide complex that may support cellular repair.
Dosage & How to Take
Start with 1g daily and gradually increase to 3-5g over 1-2 weeks. Some protocols use up to 10g daily for detoxification. Start low to minimize detox reactions (headache, GI upset).
| Purpose | Dose | Notes |
|---|---|---|
| General health/nutrition | 2-3 g/day | Maintenance dose for nutrient support |
| Immune support | 5 g/day | Based on immune function studies |
| Detoxification | 5-10 g/day | Higher doses for active detox protocols. Start low. |
| Cholesterol support | 5-10 g/day | Based on clinical trials showing lipid improvements |
Best Time to Take
Take with meals. Can be divided into 2-3 doses throughout the day.
With or Without Food
Take with food to improve tolerance and reduce GI upset. The chlorophyll content can cause green-colored stool — this is normal.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Broken Cell Wall Tablets | High | Convenience, no taste | Cell wall must be broken for nutrient access. Tablets avoid the strong taste. |
| Broken Cell Wall Powder | High | Smoothies, flexible dosing | Strong green taste. Mix into smoothies or juice. |
| Chlorella Growth Factor (CGF) Extract | High | Concentrated active compounds | Extracted nucleotide-peptide complex. More concentrated than whole chlorella. |
Side Effects & Safety
Common
- Green-colored stool (harmless)
- GI upset when starting (gas, bloating, diarrhea)
- Detox reactions (headache, fatigue) — start low
Rare
- Photosensitivity (due to chlorophyll)
- Allergic reactions
- Iodine sensitivity (contains trace iodine)
Contraindications
- Autoimmune diseases (chlorella stimulates immune function)
- Warfarin use (chlorella contains vitamin K)
- Iodine sensitivity
Interactions
Chlorella contains vitamin K which can reduce warfarin effectiveness
Chlorella stimulates immune function; may counteract immunosuppressive drugs
Often combined for complementary benefits — chlorella for detox, spirulina for energy
Scientific Research
Chlorella and Immune Function
5g/day chlorella for 8 weeks significantly increased salivary IgA and NK cell activity in healthy adults
Chlorella and Cholesterol
Meta-analysis found chlorella supplementation significantly reduced total cholesterol and diastolic blood pressure
Chlorella and Heavy Metal Detox
Chlorella supplementation reduced mercury levels in dental amalgam patients and accelerated heavy metal excretion
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.