Chlorella
A real meta-analysis, small effects, and a detox reputation imported from rodent feed studies.
C-
Evidence grade
D
Worth it
$15-25/month
Typical cost
DoseTrials used 4 to 10 g/day of powder or tablets. The cell wall decides the product: intact chlorella walls resist human digestion, so 'broken cell wall' processing is the meaningful label line, and unprocessed product delivers materially less. Chlorella contains real vitamin K, which is nutrition for most readers and an interaction for warfarin users (see safety).
BasisChlorella has a meta-analysis, which puts it ahead of most of its shelf, and the meta-analysis says small surrogate effects from small imperfect trials.
Chlorella is a freshwater green alga sold as powder and tablets for cholesterol, blood pressure, immunity, and detoxification. We grade Chlorella C- on evidence and D for worth-it at about $15-25 per month.
What it does
Chlorella is a freshwater green alga sold as powder and tablets for cholesterol, blood pressure, immunity, and detoxification. It is the last item of the Asprey extension and of the merged grading queue as filed.
What the research says
Small trials and meta-analysis show modest cholesterol and blood pressure improvements
Evidence: emerging. A meta-analysis of chlorella trials (about 19 small studies) found total cholesterol down roughly 8 to 10 mg/dL and small systolic and diastolic reductions versus control, with trial quality mixed. Individual RCTs in borderline-hypercholesterolemic and hypertensive adults point the same direction at small magnitudes. This is a real, minor, surrogate-level file, one tier above most algae marketing and one tier below anything actionable.
Immune-marker and liver pilot studies are preliminary; the heavy-metal 'detox' claim is animal work
Evidence: weak. Small trials report shifts in salivary IgA in athletes and one pilot in fatty liver disease reported enzyme improvements. The detox reputation traces to rodent studies of chlorella binding cadmium and dioxins in feed, an exposure model with no human equivalent tested. As elsewhere in this library, animal binding data do not become a human cleanse.
Chlorella has a meta-analysis, which puts it ahead of most of its shelf, and the meta-analysis says small surrogate effects from small imperfect trials. It is food-like, safe for most people, and priced like a therapy. C- for a modest honest file wearing oversized claims, a fitting final record for a queue that graded the whole spectrum from creatine-grade evidence down to none.
Is it worth it?
Evidence (C-) sits below the leaderboard floor, so the worth-it grade is capped at C+; the derived value lands at D, because about $20 a month buys surrogate-level effects that diet changes outperform. Derived from the October 2026 worth-it model.
Typical cost
$15-25/month
Common form, not a brand recommendation
Dosage context established
Trials used 4 to 10 g/day of powder or tablets. The cell wall decides the product: intact chlorella walls resist human digestion, so 'broken cell wall' processing is the meaningful label line, and unprocessed product delivers materially less. Chlorella contains real vitamin K, which is nutrition for most readers and an interaction for warfarin users (see safety).
Worth-it leaderboard
Chlorella sits outside the worth-it top 20.
Chlorella sits outside the current top 20 on the gated leaderboard. The leaders below clear an evidence floor of B- before price counts at all, so cheap alone never earns a rank.
- 1AWorth itCreatine evidence A-~$5-10/mo
- 2AWorth itCaffeine evidence B+~$5-10/mo
- 3AWorth itVitamin D evidence B~$5-8/mo
See the full worth-it leaderboard →
When the evidence moves a grade, this ranking moves with it. Thursday is where you hear it first.
Safety notes
GI effects (nausea, gas, green stools) are common at trial doses. The vitamin K content can antagonize warfarin: anyone anticoagulated should treat chlorella as a dietary change to disclose, not a neutral green. Photosensitivity reactions are reported rarely. Algae products share the category's sourcing caveat: grown in open ponds, they can accumulate contaminants, so batch-tested brands matter.
Longevity Lab Report
Chlorella news. Graded when it happens.
The grade on this page stays free. The email carries the news on chlorella: expert moves, dose changes, and what is working, in plain English every Thursday.
Changelog
Last updated 2026-10-23
- 2026-10-23|Graded from the lipid and blood-pressure meta-analysis and the surrounding pilot literature. Chlorella closes the Asprey extension and the filed grading queue: its record carries the queue's final lesson in miniature, a supplement with a slightly better file than its category and claims still sized beyond it.
- 2026-10-23|Not listed under heart: the graded findings are small surrogate movements from low-quality trials, and per this library's assignment discipline that does not carry the tag.
The week's longevity and biohacking news.
This grade for Chlorella rests on the record above. When a new result changes that record, the grade changes with it, and the Thursday email is where the change lands first: the week's longevity and biohacking news, in plain English, linked back to the reasoning on this page.
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Every grade follows a published rubric, and sponsors never change one. When the evidence moves a grade, Thursday is where you hear it first, before you renew a stack that stopped earning its cost.