Chlorella vulgaris and its biological activities in lab and animal studies
What it found
Lab and animal tests found that Chlorella vulgaris extracts showed antioxidant, antimicrobial, anti-cancer, and blood pressure effects.
Seven active compounds were identified as contributing to these activities.
What they found
Animal and lab studies
Antioxidant activity in labs
In lab tests, extracts of Chlorella vulgaris cleared away several types of free radicals. One isolated compound worked about as well as vitamin C in these tests.
Blood pressure in rats
A peptide from the alga lowered systolic blood pressure by 50 mmHg within two hours in hypertensive rats. By the end of the study, it dropped pressure by 31 mmHg, compared with 10 mmHg for a standard drug.
Cancer cells in labs
Extracts slowed the growth of human lung cancer cells in lab dishes. A single compound from the alga was stronger against cervical cancer cells than the drug doxorubicin in these tests.
Immune support in mice
Mice fed a poor diet had better nutrition markers and higher immune signals when given Chlorella vulgaris. In cell tests, the alga boosted production of two key immune proteins.
Wound healing in animals
A gel containing the alga improved wound healing in mice, increasing collagen and reducing inflammatory cells. An ointment with 15 % extract also sped up healing in pig ears.
Other findings
Seven active compounds
Researchers identified seven active compounds in the alga, including dodecanoic acid and loliolide. These substances are linked to antibacterial, antiviral, and anti-inflammatory effects in various studies.
What the authors conclude
- They describe Chlorella vulgaris as a versatile microalga with many potential health and industrial uses.
- They note that most current evidence comes from lab experiments rather than human trials.
- They call for standardized extraction methods and future clinical studies to see if these effects happen in people.
How it was done
People in East Asian countries like China, Japan, and Korea widely consume this microalga as a supplement. The authors wanted to explain how its chemical makeup leads to its reported biological effects.
The authors gathered and summarized existing research on the chemical components and biological activities of Chlorella vulgaris. They looked at studies done in test tubes, cells, and animals. They also described seven specific active compounds found in the alga.
What it can’t tell you
- Most of the findings come from test tubes, cells, or animals.
- These results cannot show what happens when people eat the alga.
- Different studies used different ways to prepare the extracts, so scientists do not yet know which method works best.
Who paid
- Conflicts
- The authors declare that they have no conflicts of interest.
- Authors work at
- Sungkyunkwan University, Republic of Korea; Soongsil University, Republic of Korea
The paper
- Title
- Chlorella vulgaris , a representative edible algae as integrative and alternative medicine
- Type
- ReviewThe authors read earlier studies and describe what they found. It isn’t a new study.
- Evidence
- Animals and lab studies
- Summarised from
- Full text
- Cite
- Heo Y, Kim MY, Cho JY (2026). Chlorella vulgaris , a representative edible algae as integrative and alternative medicine. Integrative medicine research. doi:10.1016/j.imr.2025.101228Free full textPubMed 40985044DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error